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【单选题】
一个经济体系必须回答的基本问题是:A.
生产什么
B.
如何生产
C.
为谁生产
D.
以上都包括
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【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...
【简答题】The policeman's attention was suddenly caught by a small box which ______ placed under the Minister's car. A. has been B. was being C. had been D. would be
【简答题】keep one's cool
【简答题】A．regularly B．gradually C．slightly D．suddenly
【简答题】A．To define one's goal. B．To buy more health and fitness magazines. C．To keep one's own habits. D．To reward oneself for any progress.
【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.
【单选题】It's self-evident that no one would have time to know everything ______going on in the world.
A.
there is
B.
as is
C.
it is
D.
what is
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