【简答题】翻译下列短语并完成句子。 1. a balanced diet ____ 2. keep the balance of nature ____ 3. keep one' s balance___ 4. lose one's balance ( =be out of balance)___ 5. He ______ and hurt himself when he went upstairs. 6...
【单选题】What will happen if the gravity suddenly disappeared? 查看材料
A.
Nothing on Earth will begin to float.
B.
The air will leap into space in a minute.
C.
Some of the living things will die gradually.
D.
Water is everywhere on Earth.
【简答题】香菇,又称香菌、草蕈、冬菇,有( )的美誉。
【单选题】It's self-evident that no one would have time to know everything ______going on in the world.