一、根据句意，从方框中选择适当的词并用其正确形式填空。
industry die low fill
explore related
1. There are many stories about space ______ in ancient China, such as Chang'e Flies to the Moon.
2. The windows are large enough to ______ the room with light.
3. Pingping is very sad because of the ______ of her pet dog.
4. I want to work in the space ______ when I grow up.
5. It's so cold today. The ______ temperature is about $-20°\mathrm{C}$.
6. The name of the Tiangong space station is ______ to a Chinese ancient story.

二、选出正确答案并填在横线上。
1. Helping others can bring us ______ (happy/happiness) and we can also get help from others.
2. ______ (Careful/Carefulness) can help you make fewer mistakes in your daily life.
3. It is getting ______ (dark/darkness), and stars begin to appear in the sky.
4. Which planet is ______ (bigger/biggest), Uranus or Neptune?
5. Of all planets in the solar system, Jupiter is the ______ (large/largest) one.
6. I think space traveling may be ______ (more wonderful/the most wonderful) thing in the world.

三、按要求完成句子。
1. We didn't go out yesterday because it was cold.（改为同义句）
We didn't go out yesterday ______ ______ ______.
2. Mercury is smaller than other planets in the solar system.（改为同义句）
Mercury is ______ ______ ______ in the solar system.
3. The highest temperature today is $\underline{30° C}$.（对画线部分提问）
______ ______ the highest temperature today?
4. The star is bright.（改为感叹句）
______ ______ ______ star it is!
5. He is busier. He feels happier.（合并为一句）
______ ______ he is, ______ ______ he feels.