Ask some interesting questions [have answers]

Newton was the first person to discover the composition of white light.

The earliest thermometer was the air thermometer.

How many times did Zunyi Conference criticize and expose the mistakes of counter-encirclement? : the fifth time

What were the earliest hot air balloons used for? : aerial surveillance

The most advanced reptile is the crocodile.

How much can the lowest basin reach below sea level? : 154

What is the lowest basin? : Sichuan basin

Purple land refers to the land in which terrain area in China? : Sichuan basin

The four famous poets are Mei Lanfang, Cheng, Shang Xiaoyun and Xun Huisheng.

How many languages are there in Russia? : 122

How many kinds of pangolins are there in Africa and Asia? : 7

"In the pulmonary circulation, blood flowing from the lungs will first enter the right ventricle of the heart.

In which year did $ NUMBER people join the new army of Hunan Uprising? : 19 1 1

In what year was Ye Jianying awarded the rank of Marshal: 1955?

"In which year did the civil war between the northern federal government and the Confederacy begin? : 186 1 year

In Thailand, more than 90% people believe in Buddhism.

In China, the maximum remittance amount of postal money order is:: 10000 yuan.

How many degrees below zero can the highest star refrigerator in China drop? : 18

What festival is the second Sunday in May in China? Mother's day.

How many kinds of bonds can be divided according to the duration? : 3

The value-added tax stipulates that the threshold for selling goods is monthly sales. how much is it? : 1600-2000

Writers who gave up medicine and devoted themselves to literature when they were young are: Guo Moruo.

To make colored glass, cobalt oxide is added to the raw material, and the glass is blue.

What should I do if my eyes get swollen in the morning? Apply with a cold towel

Who wrote the story about stealing wall light? : Kuang Heng

In nature, Cordyceps sinensis is a strange medicinal material that is rarely seen in the growth process. Only distributed in the mountainous areas of Qinghai-Tibet and Yunnan-Guizhou Plateau. How many meters above sea level? : 3500-4500

How many aircraft carriers did the United States lose in the Battle of Pearl Harbor? : 0 ships

There is a small nucleus at the center of the atom, which is called the nucleus.

If you are bitten by poisonous insects in the wild, you should disinfect with drugs. What insects bite garlic juice? Centipede.

If you eat poisonous mushrooms in the wild, drink plenty of water immediately.

Which country was the first to establish a strategic missile force in Asia? : China

Put something beside the food or on the meat, and the flies won't climb up.

"At what time, China people and the Ministry of Civil Affairs ratified Zhang Zizhong as a revolutionary martyr? : 1982

"How much does it cost to send a letter weighing100g by air from Shanghai to France? : 23 yuan

"How much does it cost to send a letter weighing100g by air from Shanghai to Macau? : 8

Not suitable for eating when the wound heals: soy sauce.

In what year did Temujin hold the Hulitai meeting in the south source of the river (now Enen River in Mongolia), namely the Great Khan of Mongolia, numbered Genghis Khan: 1206?

In what year was MacArthur sworn in as the highest military post in the US Army and became the youngest army chief of staff in American history: 1930?

In the eyes of Europeans and Americans, blue violets represent honesty.

Which of the following Middle East wars was first launched by Arab countries? : the fourth time

In e-mail, the post office is usually placed in the host of an ISP.

Which country saw the news on the poster first before the first newspaper appeared? : Germany

The painter who used to paint on stickers at home and didn't buy them from the government was Qi Baishi.

The pollution of papermaking black liquor is very serious. How many tons of black liquor will be discharged per ton of pulp produced/kloc-0? : 10

In China's modern literary world, Ai Qing is a poet.

How many tens of thousands of years ago Wushan man fossils were found in Wushan County, China? : 200

The weight of wood and iron in vacuum is 1 ton, which is heavier in air? : wood

At about -2 18℃ (55k), it becomes a snowflake-like solid with a light blue color.

When the vehicles of both sides meet on a narrow slope, the downhill car will let the uphill car go first.

When is the best time to take a sea bath in China every year? : July to September

"Banana and pineapple, which fruit is rich in dietary fiber? : bananas

How many chromosomes does a normal human cell have? : Article 46

When the helicopter stopped in mid-air, its rotor was still turning.

The first subsea oil field developed by China is located in Bohai Sea.

The first dynasty in the history of China was Xia.

How long does it take for China's meteorological department to distinguish the size of rain? : 24 time

When did China start to raise silkworms for reeling? Four or five thousand years ago

Which nationality is the bowl dance? Mongols.

What material was the filament of the earliest electric light bulb made of? Carbonized cotton thread

What is the legendary prototype of Phoenix? : pheasant

When buying clothes, we often see not only the numbers indicating height, but also the letters A, B, C and so on. What do these letters mean? The difference between bust and waist.

How many years did the Trojan War last in Homer's epic? : 12 years

How many coliforms on tableware must be less than/100 square centimeter in the standard of Testing Tableware Washing? : 3

How many degrees do you bow when you meet for the first time in Japan? : 30-45

"The natural belt between the north and south of the west coast of the mainland and the two Saarna belts is a temperate forest belt.

The natural zone between the two savanna belts on the west coast of the mainland is the rainforest belt.

The ancestor of sugar in China is maltose.

Among the six ancient capitals of China, Xi 'an is the one with the longest capital.

Which kind of bamboo has the best quality in bamboo summer sleeping mat? : Shuizhu

In the food chain of grass-rabbit-wolf-tiger, grass belongs to:: producer

"In the grass-rabbit-wolf-tiger food chain, tigers belong to the third category of consumers.

"In the grass-rabbit-wolf-tiger food chain, wolves belong to: secondary consumers.

In the grass-rabbit-wolf-tiger food chain, rabbits belong to primary consumers.

The famous saying that knowledge is power was first put forward by Bacon.

Can expectant mothers drink coffee? Yes, but don't use too much.

The famous geneticist Tan has made great achievements in studying what animals? ladybird

The Russian writer with the same name as Lu Xun's Diary of a Madman is Nikolai Gogol.

Attached to Pingju is: Liu Qiaoer.

The representative repertoire belonging to the school of Peking Opera is: barren hills and tears.

The actual measurement shows that DTX power saving mode can prolong the call time by 30% ~ 50% at most.

Which school in ancient China was similar to Greenpeace's thought? : Taoism

When will it be confirmed that there are other satellites besides the moon on the earth? : 196 1

In the southern war, positioning is very important. When the conditions are simple, you can use the pointer watch to judge the direction of the sun. Methods: When the watch is placed horizontally, the position indicated by the hour hand (24-hour clock) is halved against the sun, and the direction indicated by 12 on the dial is fixed. Which direction does it point? : north

Zhaojun went out to marry Huhan Xiedan, so which emperor was in the Western Han Dynasty? : Emperor Han Yuan

Where is the buoyancy when swimming in the water? Deep water and shallow water are the same.

The most abundant species in the plant kingdom are angiosperms.

The national standard of split air conditioner with refrigeration capacity of 2500W stipulates that the indoor noise is less than 48 dB.

When did the Northern Warlords of China declare war on Germany and Austria in World War I? : 19 18

When did China's first hydrogen bomb explode:: 1967?

The word "impressionism" comes from Monet's Sunrise? Impression "

Aspirin is a commonly used medicine, and its main function is to relieve fever and pain.

"Zhang Dian" refers to the calligrapher: Zhang Xu.

Which country is the European bank in? : Germany

What kind of tea is more precious when stored? : Pu 'er tea

What is the national flower of Korea? : hibiscus

Teenagers don't know what it's like to worry. They fell in love with the floor. Worried about adding new words. Now that I know the taste of sadness, I want to talk about it. But it is a cool autumn. Which poet's work is this? : Xin Qiji

What is the largest border city in China? : Dandong

Which river was renamed Mekong River after crossing the national border: Yarlung Zangbo River?

Where did grapes come to China? : the western region

Where do tomatoes come from? : South America

Where do potatoes come from? Europe

What kind of goods does Mary Kay deal in? : cosmetics

"Who founded Xiamen University? : Chen Jiageng

"Who is the first Minister of Communications of New China? : Zhang Boju

"Who is the first Minister of Culture of New China? : Shen Yanbing

"New China's first minister of water resources is? : Fu Zuoyi

Who is the famous essayist in Tang Dynasty who is known as "the decline of eight generations of literature"? : Han Yu

"Where is the farthest point of China Air Force patrolling the South China Sea? : East of Taiwan Province Strait

"Suppose there is a war in the Taiwan Strait, what is the key to the outcome? Air combat missile

"In which World Cup was the red and yellow cards first used in football matches? 1970 The 9th World Cup?

"Which of the following statements about lubricating oil is wrong?" The freezing point of lubricating oil working at low temperature is too low, and the oil supply is reduced or interrupted, which will accelerate the wear of parts.

Li Guangbi, a general of the Tang Dynasty who participated in the evaluation of "An Shi Rebellion", was not a Han Chinese. Where is he from? : Khitan

In which province is the hometown of Guan Yu, a general of Shu and Han Dynasties? : Shanxi

Where is the main battlefield of the famous Hundred Regiments War in War of Resistance against Japanese Aggression? : Yangquan

What is the lowest place in the world? : Mariana trench

Sun Li, a famous writer, is regarded as a representative writer of various schools? : Baiyangdian school

In which period was The Whole Tang Poetry edited? : Qing dynasty

Who founded Taoism? : Qiu Chuji

Is Holland the national flower or ()? : tulips

There are many ethnic groups in Sichuan, including the only ethnic group in China. : strong

Leshan Giant Buddha took () years to build. : 90

Du Fu's Caotang was Du Fu's residence when he lived in Chengdu. Which of the following poems was written by Du Fu in Chengdu ()? : Delighting in Rain on a Spring Night

Dujiangyan project construction period is (). : Warring States Period

Which of the following is not the representative "unique skill" of Sichuan local opera? : water jacket

What is the scenic spot called "Yaochi on Earth"? : Huanglong

What is the highest peak of Mount Emei? : ten thousand Buddha ding

Wolong Nature Reserve is a nature reserve that mainly protects alpine ecosystems and rare species such as giant panda, wildebeest and wildebeest. : Davidia involucrata

Germans really "eat meat and drink"-eat pork and drink beer. According to statistics, the annual pork consumption of Germans is _ _ _ _ _ _ _ kg, ranking first in the world. : 65

The largest tree in China is _ _ _ _ _ _ _ _, with a crown area of 5.5 mu, and its trunk is covered with thick roots, such as mountains, canyons and valleys. : banyan tree king

The oldest flower city in the world is Chang 'an in Tang Dynasty, when there were more than 3,000 kinds of flowers. Do you know where Chang 'an is now? : Xi an

According to relevant data, a grain of button cell can pollute 600 tons of water, which is equivalent to a person's lifetime drinking water. Excuse me, a 1 battery rotted in the ground, how many square meters of soil will permanently lose its use value? : 1

During Graf's career, Yi * * won 22 Grand Slam titles and occupied the first place in the world for _ _ _ _ weeks in a row. : 377

Who was the first woman to light the Olympic flame in Olympic history? : Basilio

"Points, points, the lifeblood of a driver", according to "Beijing Motor Vehicle Drivers Violation Punishment Standard", do you know how many points to deduct for driving a motor vehicle after being drunk in Beijing? : 12

There are many kinds of museums in the world. Which country is the "Living Horse Museum"? : France

Newlyweds pay attention to honeymoon. It is said that the custom of honeymoon originated from Teutonic people in ancient Germany. After the wedding, both men and women should go to beautiful places and drink honey water or wine made of honey every day, not for several days in a row to show the beginning of a happy life.

"Unique Family" is a century-old shop famous for steamed dumplings. Originally a small business "Wang Ji Restaurant", it was later renamed as "Unique Restaurant" by _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _.

_ _ _ _ _ _ _ was the first country to discover amber. Countries near the Baltic Sea, such as Sweden, Germany, Poland and Ukraine, all produce amber, and other countries, such as China, Myanmar, Dominica, Italy and Romania, also produce amber with their own characteristics. : Denmark

Known as "the first citizen of Brussels", the bronze statue of "the little boy who peed" has _ _ _ _ pieces of various costumes. : 160

The first prize of national natural science has been vacant for several years at most: 4 years since it was founded on 1977.

Who won the highest national science and technology award of 5 million yuan in 2002: Jin Yilian?

The following meats have the highest fat content: lean meat

Which hospital was the first successful replantation of severed limbs in China? Shanghai Sixth People's Hospital.

When did people's self-awareness come into being? 1 year.

The most basic treatment for senile diabetes is diet therapy.

How to open the patient's airway during first aid: raise your head and chin.

How long does it take for a drop of water to travel around all the sea areas in the world: 5000 years.

What will happen if the corn doesn't grow a beard in time? There is no grain on the stick.

According to the average distance between the earth and the moon, how long does it take for light to travel back and forth between the earth and the moon? 2.6 seconds.

What infrared rays don't have is that they can penetrate the wall.

Shanghai successfully bid for the World Expo. When will the Expo be held: 20 10?

How old is the Yellow River: 550,000 years.

What is the temperature of the hottest sea water at the bottom of the sea?

Constellations that are not in the direction of the earth axis will appear in the eastern sky at dusk and in the western sky at dawn.

If you hear thunder after seeing lightning, how far is the lightning at least: 1 km.

The highest tunnel in the world is in China.

China is a big country that attracts foreign investment. In 2002, * * * introduced foreign investment: 50 billion.

China' s $ NUMBER Great Wall has attracted the attention of the whole world. Which is the longest foreign "Great Wall": Germany?

The giant panda is a rare animal in China, and so is the red wolf. Which country does it live in: America?

Which country is the highest mountain in Europe: France?

Which country in the world has no cats: Maldives.

Total length of Hexi Corridor: 1200 km.

Which spring was given the reputation of "the first spring in the world" by Emperor Qianlong: Baotu Spring?

The nicknames of March are: Yue Ji, Taoyue, Late Spring, Late Spring and Silkworm Moon.

What file format is MP3? Music file.

Which of the four bronze halls in China is the heaviest: Wutai Mountain Copper Hall.

"What is Lugu Lake at the junction of Sichuan and Yunnan called? : Xanadu

"What is the old name of Naxi nationality? : Mosuo nationality

"Which city is the West Lake in Guangdong? : Huizhou

What does "Bosten Lake" mean in Uighur? : oasis

"Which country first used handprints in the world?" : China

"What is the top of the subway? : salt

"How many volumes are there in the reflection of Chen Shou? : 65

"Who is the poet who won the title of" Seven Wonders "?" Wang Changling

"Longevity over Nanshan" refers to a mountain in which province? : Yunmen Mountain, Shandong Province

"What kinds of computer software are there?" : system software and application software

"What does MPC mean?" : multimedia computer

"Bubble gum has a special taste. Where did it come from? : eraser

They have made great contributions to the unification of China, the expansion of its territory and the development of its economy and culture. : Manchu

UNESCO adopted the World Heritage Resolution: 1972 on _ _ _.

The Sch? nbrunn Palace where Princess Sissi of Austria once lived was built in the _ _ century: 17.

Mozart was born in Salzburg, Austria.

The official title of Prince Philip, the husband of Queen Elizabeth II, is _ _ _ _ _: Duke of Edinburgh.

Which country does Lufthansa come from? : Germany

Which song is called the "second national anthem" of Austria? : Blue Danube

"If winter comes, can spring be far behind?" Which poet's poem is it? : Shelley

America's manned space flight began in _ _ _ _:1961.

The Treaty on the Non-Proliferation of Nuclear Weapons was signed on: 1968.

Leonid meteor shower usually occurs around _ _ _ every year: 165438+ 10/7.

The total amount of gold mined in world history is _ _ million tons: 14.

Where does the musician Schubert come from? : Austria

Where did Chao Gai and others catch the birth class: Huangnigang?

What is the longest probation period in a labor contract? : 6 months

If workers are arranged to work on statutory holidays, the remuneration shall not be less than 3 times the salary.

According to our constitution, which of the following options is not a condition for citizens to get material help? Citizens are suffering from natural disasters.

People who live 100 years old are called: very old.

How much the PT stock falls is the limit:: There is no limit.

During the probation period, when can the employee notify the employer to terminate the labor contract? : at any time

Which of the following statements about mineral resources is correct? All mineral resources belong to the state.

What is the stock market index based on? : representative stocks

What is the description of the violent oscillation of the stock market? : monkey market

The human body contains 23 pairs of chromosomes.

In ancient China, the famous doctor known as the King of Medicine was Sun Simiao.

A quatrain circulating in the history of China literature: I hope people will live for a long time, and a thousand miles * * * Shan Juan is the work of a poet () in the Northern Song Dynasty. : Su Shi

The astronomer who discovered the laws of planetary motion was Kepler.

When did Shenzhen stock market start counting (market index)? : 199 1

She is still a child (please click the "View Picture" button at the top right): Elizabeth Taylor.

The time for Apollo spacecraft to reach the moon is:: 1969.

The earliest inventor of the automobile was the German inventor Ben Ci.

China's earliest mathematical works are: Zhouyi Suanjing.

Many people think that combing your hair is just a matter of taking care of your personal image. In fact, there is a lot of knowledge in combing your hair. As the saying goes, "comb your hair for ten minutes every day to prevent _ _ _ _ _ _ _". : strokes

Every country has different customs and interesting festivals. Do you know what kind of festival the faun festival was in ancient Rome? : lovers' day

"Bright eyes and white teeth" has always been the standard for evaluating beauty. Nowadays, "decorative teeth" are the most popular in Paris, so name thinking is to make a big fuss about teeth. Do you know what "decorative teeth" can do to beautify our teeth? Glue crystals or diamonds to the surface of real teeth.

Grease is very happy to be a mother-to-be. Dr. Zhang from the infirmary told her that it is best not to use lipstick for _ _ _ _ _ _ _ months before pregnancy. : three

The minuet was originally a _ _ _ _ _ national folk dance, which was a three-time dance music. It was introduced to the court around 1650, and gradually became a slow and elegant dance music, popular in aristocratic society. : law

In order to show his unique personal taste, Jack chose Nokia 72 10 mobile phone. This tri-band mobile phone has a 4096 color display screen, which supports MMS, GPRS, JAVA application download and ringtone synthesis, but what excites Jack most is its refreshing _ _ _ _ _ _ _ shaped keyboard design. : 5

Pig liver contains a variety of nutrients, but many people don't know that pig liver should be detoxified before eating. Because the poisonous blood in pig liver is scattered in thousands of liver blood, you should wash it on the tap after buying pig liver, then put it in a basin and soak it in1-2 _ _ _ _ _ _ _ _ _ _ to remove the residual blood. : hours

In what year did Joseph write it? The British Theatre founded by alford attracts actors, writers, musicians, designers and artists from all over the world. It combines various skills to find the best way to express people's stories, and tries to raise the performance space of the program from the theater stage to the realm of imagination. : 1997

After physical exercise, people should eat more foods rich in _ _ _ _ _ _ _ _, such as fruits, vegetables and bean products. So as to help maintain the basic balance of pH in human body, maintain human health and eliminate fatigue caused by exercise as soon as possible. : alkali

Do you know which of the following characters is the allusion of "son-in-law of the East Bed"? : Wang Xizhi

In the latest promotional film of NBA in 2003, Yao Ming, a little giant from China, took the lead. In the film, Yao Ming will perform a sport that he has never practiced before. Do you know what this is? : Tai Ji Chuan

Many young parents like to put their children among their parents when they sleep at night, which is very harmful to their health. The oxygen consumption of adult brain tissue accounts for about 20% of the whole body oxygen consumption, while that of infants and young children can reach _ _ _ _ _ _ _ _ _ _%. If the baby sleeps between parents, it will leave the child in an environment of hypoxia and high concentration of carbon dioxide. : 50

The growth period of rosewood is extremely slow. It only grows 3 cm thick every _ _ _ _ _ _ years, and it takes 8900 years or even thousands of years to grow a wood. : 100

There is a strange spinning cat in _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _ _: South America.

Brave Heart is an epic about the Scottish people's resistance to the tyranny of the British king. Who is the director and hero of this film? : mel gibson

Eating food rich in which of the following vitamins can keep the skin fair? : vitamin e

At present, the national uniform shoe size is based on the length of the foot and the size of _ _ _ _ _ _ _ _ mm: 10.

Xi 'an Dumpling Banquet is called "the best in the world" and "the best in China". Since the introduction of 1984, there have been hundreds of jiaozi with different colors, which are divided into several grades, such as Hundred Flowers Banquet, Peony Banquet, Dragon and Phoenix Banquet, Palace Banquet and Eight Treasures Banquet. Excuse me, Xi 'an Dumpling Banquet was born in which of the following hotels: Jiefang Road Dumpling House.

Marathon was set up in memory of Felipedes, who ran from Marathon City to Athens and died in order to convey the good news of victory as soon as possible. Do you know that the distance of the marathon is 42 kilometers _ _ _ _ _ _ meters? : 195

The optimum water temperature of polyester wool fabric is:: 25.

Forbes ranked 20 most influential business books, which one ranked second? : Foundation Evergreen

Most studies show that the growth cycle of eyebrows is several months: 2

A cup of good quality coffee will not reduce the flavor after cooling, but also show a better taste than when the temperature is hot. However, due to its instability, coffee is usually encouraged to drink while it is hot. Do you know the best drinking temperature of coffee? : 85~88

Xiao Wang feeds his baby son Mead Johnson milk powder imported from the United States every day. Recently, he heard that there is something wrong with American cattle. Xiao Wang is very nervous. He searched the Internet and found out what milk powder Mead Johnson was. : qualified products

The fifteenth day of the seventh lunar month is commonly known as "Ghost Festival", also known as "Kasahara Festival". Do you know it is also called _ _ _ _ _ _ _? : Zhongyuan

How many cheongsam did Maggie Cheung change in In the Mood for Love: 23.

There is a bookstore in Beijing called "Guge Book Bar", which specializes in introducing Tibetan culture. Do you know where it is? : Huokeji Street

Uncooked soybean milk may contain pancreatic inhibitory enzymes, saponins and other substances, which will cause poisoning symptoms such as nausea, vomiting and abdominal distension after eating, so soybean milk must be boiled for a few minutes before eating. : 5- 10

What kind of combat opportunities does Chengdu Aircraft Industry Company create to significantly improve the PLA's air combat capability? :J - 10

1952, China held the first national evaluation reception, and named four famous wines. Do you know what these four famous wines are? : Maotai, Fenjiu, LU ZHOU LAO JIAO CO.,LTD, xifeng liquor

Which of the following shampoos can prevent or relieve wrinkles on the face? : acidic shampoo

Why is there only 28 days in February? : stipulated by Caesar and Augustus

In which country did flight attendants first appear? : America

The World Cup is a world-class competition second only to the Olympic Games. Do you know where the first World Cup was held? ：

The first World Chronic Obstructive Pulmonary Disease Day was established on October, 2002. "Chronic obstructive pulmonary disease" is a chronic progressive respiratory disease, a general term for chronic bronchitis and emphysema, and the fourth leading cause of death alongside AIDS. : 20

Chinese rose flowers are beautiful in appearance and color. Known as the "queen of flowers" abroad. Do you know which country the Chinese rose originated from? : China

At Christmas, besides the Christmas tree and Christmas presents, Christmas dinner is essential. Do you know what the main course of Christmas dinner is? : turkey dinner

Stamp titled "Official Misprinted Ticket": Misprinted on purpose.

The fifth set of RMB 50 yuan coins issued nationwide by the People's Bank of China on June 5438+065438+1October 18, 2002. The color is golden yellow and the metal material is copper-plated alloy with steel core.

65% of the world's fresh water resources are concentrated in 10 countries, and China ranks fourth.

Among the nine planets in the solar system, the number of satellites is second only to Saturn: Jupiter.

Among the nine planets in the solar system, Jupiter stands out from the crowd: its mass is 3 18 times that of the earth and the sum of the other eight planets;

"anti-scurvy vitamin":: vitamin c

On April 1955, 1 1, the Kashmir Princess incident shocked China and foreign countries. The target of murder is:: $%

Which book does not belong to Ba Jin's love trilogy: Autumn?

The most important differences between "compulsory education" and "universal education" in China are: mandatory.

Tree rings are not unique to trees. Humans and many animals also have tree rings, but in different forms. The human ring is in the skull.

When is the freshest air in a day: 7 pm to 7 am.

Shuffleboard is a brand-new fashion sport in China, which has been loved by more and more people in recent years. As a casual game, do you know that it originated in _ _ _ _ _ _ _ country in the 5th century BC/KLOC? : English

We often worry that when using the microwave oven, it will hurt our health because of microwave leakage. In fact, the frequency of microwave in the microwave oven _ _ _ _ _ _ _ _ _ MHz. This kind of microwave can't penetrate the internal organs and tissues of human body, but can only heat the skin and body surface tissues. : 2450

Double Ninth Festival, also known as "Festival for the Elderly", is a day when people have the custom of inserting dogwood and drinking _ _ _ _ _ _ _ _ _ _ _ _ _ _.

Flanders cattle dog used to be one of the most skilled cattle dog in Western Europe, and now he is used as a _ _ _ _ _ _ _ dog, a guard dog and a search dog. Guide the blind.

When should the stomach-invigorating and acid-making drugs be taken? : before meals

The first country in the world where women got the right to vote was Finland, which began in _ _ _ _ _ _. : 1906

The current Polaris is Alpha Ursa minor, but we can accurately calculate by computer that Alpha Draco occupied the North Pole in 3000 AD. In ancient Greece, Polaris was a beta star in Ursa minor. By 14000, it will become Vega.

The average person's first dream lasts about 5~ 15 minutes (the average is about 10 minutes). How many dreams do people have in one night? : 4-6

Mendelssohn, a famous German composer, finished the creation of A Midsummer Night's Dream Overture at the age of _ _ _ _ _. : 17

Do you know what day it is every year in World Environment Day? : June 5

Do you know that FIFA recently admitted for the first time that football originated in _ _ _ _ _ _ _? : China

By the end of 20001,there were more than _ _ _ _ _ _ financial institutions in Shanghai, and the added value of financial and insurance industry reached 68.536 billion yuan. : 3200

The so-called mahogany furniture mainly refers to furniture made of rosewood, rosewood, ebony, beech, rosewood and chicken wing wood. Other wooden furniture can't be called mahogany furniture, among which _ _ _ _ _ _ _ is the best in mahogany. : mahogany

Now the film industry is developing faster and faster, but do you know which of the following is the first color feature film in China? : "blessing"