What constellation is 1, 2, 3, 4, 5, 6, 7 in the picture? Science in the first grade!

1. Cygnus (by the way, write down Tianjin IV) 2. Laila (by the way, write down Vega).

3. Eagle (by the way, write down Hegu II in it)

4. Cassiopeia (see shape, W shape)

5. Ursa minor (with Polaris at the tip of its tail)

6. Ursa Major (the main body is the Big Dipper)

7. Shepherd (write down arcturus)