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问题 选择题

在农田植物→雷鸟→猛禽组成的食物链中，如果捕捉了全部猛禽，则雷鸟的数量会

A．迅速上升

B．缓慢上升

C．先上升后下降

D．先下降后上升

答案

答案：C

题目分析：若捕捉了全部猛禽后，雷鸟由于天敌减少、食物充足会大量繁殖数量上升；后来雷鸟增多会使植物减少，植物减少导致雷鸟由于数量太多，食物不足而大量饿死，雷鸟因死亡而数量减下降，故雷鸟数量是先增加后减少。故选：C

选择题

The film Hero was________great success, bringing in a lot of money to________cinema.[ ]

A. /; the        

B. a; the

C. /; /  

D. a; /
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听力题

根据已给的首字母给各句空白处填上一个适当的词，使句子完整、正确。

小题1:Last year Cindy was thirteen years old. And tomorrow will be her f           birthday.

小题2:How can you make y         understood (明白) if you cannot express clearly?

小题3:Don’t open the door until the car s    _    .

小题4:Christmas is the most important holiday in w            countries.

小题5:Today is so cold. The temperature is b            zero.

小题6:You’ll have to speak louder. The old man is a bit d           .

小题7:This teapot is made of glass. It’s broken e         .

小题8:Susan didn’t get m          until she was thirty-nine.

小题9:Ted got an A in this English test b          of his hard work.

小题10:My sister Tracy is m          interested in sports than in music.
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