【单选题】—Is there a fog in the evening ?—There be ．I’ll make a phone call to find it out .

【简答题】Enter a typical high school, and the first thing you see is the front office， where the principal dwells and grades are stored. The front office also reinforces familiar hierarchy(等级制度): principal at ...

【单选题】— Liu Fang, I didn't know you can play the Pipa and Guzheng so well.— Well, actually I ________ it since I was six years old.[ ]

【单选题】To show our respect，we usually have to take our gloves off ________ we are to shake hands with.[ ]

【简答题】一般地说，在一个生态系统中，生物种类越多，营养结构越复杂，自动调节的能力就越　　　；营养级越多，在能量流动中消耗的能量就越　　　。

【简答题】IV. 阅读理解：（共20题，每小题2分，共40分）A long time ago, before there was any money (coins or paper money), people got the things that they needed by trading or exchanging. Salt was one of the first items used to e...

【简答题】There are nine of them, so ______ get into the car at the same time.a. they may not at all b. all they may not c. they can’t all d. all they can’t

【简答题】生物体都有一定的结构，除病毒外，生物都是由构成的。

【简答题】We went through a period _______ communications were very difficult in the rural areas. A, which B, whose C, in which D, with which

【单选题】The news that he fought with his coach surprised us, ________?