题目内容

acute & crucialChoose the proper words from the above words. Change the form where necessary.1.They are carrying out the _ part of the experiment.2. There was an lack of food.3.The problem is at its most in major cities.4.Speed is ___ to our success.

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bare & nakedChoose the proper words from the above words. Change the form where necessary.

scarcely, barely & hardlyChoose the proper words from the above words. Change the form where necessary.1.He eats enough.(=他刚刚吃饱。)2.We could endure the winter here.(=我们简直忍受不了这里冬天的寒冷。)3. He is so uneducated that he can write his name.(=他太没文化了，连自己的名字都写不大出来。)4. We succeeded.(=我们勉强成功。)5. I could hardly speak for tears.(=我哭得几乎说不出话来。)

【单选题】沙丘移动方式取决于风向及其变化,下列沙丘移动方式不正确的是( )。

A. 前进式
B. 往复前进式
C. 往复式
D. 后退式

【填空题】径流形成过程包括____和汇流过程。