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问题 单项选择题

正常成年人股骨颈颈干角平均为（）

A.120°

B.125°

C.127°

D.130°

E.140°

答案

参考答案：C

解析：股骨颈干角为110°～140°，平均为127°。

听力题

第四部分根据短文的内容和首写字母填上适当的单词(10’)

Dear Jin Jing,

Your problem is a c_ 小题1:_____ one among middle school students. Maybe the following a____小题2:__ can help you. First of all, b_小题3:___ in yourself. Your greatest problem is that you lack self-confidence. The first thing you must do is to s___小题4:___ at your classmates. One smile speaks louder about your wish to make friends than any words. Your smile will s小题5:_ that you are f____小题6:__ to them.. Next, t____小题7:___ talking with a student who is as shy as you or who s____小题8:__ the same interest as you. You can discuss your studies with a classmate and you can talk about your h____小题9:_ as well. If anyone is in trouble, you should be ready to help him or her. Once you have confidence, you can make as many friends as p小题10:__. 

Yours

Lily
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选择题

下列食物链中正确的是 [ ]

A．剑水蚤→微小的水生植物→小鱼→蜻蜓的幼虫→大鱼

B．微小的水生植物→剑水蚤→大鱼→小鱼→蜻蜓的幼虫

C．大鱼→小鱼→蜻蜓的幼虫→微小的水生植物→剑水蚤

D．微小的水生植物→剑水蚤→蜻蜓的幼虫→小鱼→大鱼
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