问题 单项选择题

隐睾的精子生成缺陷和下列哪一种情况有关()

A.温度调节差

B.原发性性腺功能不足(先天性)

C.垂体功能不足

D.以上都是

E.以上都不是

答案

参考答案:D

解析:胎儿时期垂体功能不足,可影响睾丸的发育及正常下降,造成原发性性腺功能不足及隐睾症。患有隐睾会因睾丸温度调节差而使生精上皮萎缩。

完形填空

第二节(共5小题;每小题2分,满分10分)

根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中的两项为多途选项。

Expressions about water are almost as common as water. _____71____.

The expression “to be in hot water” is one of them. It is a very old expression. “Hot water” was used five hundred years ago to mean being in trouble. One story says it got that meaning from the custom of extremely throwing hot water down on enemies attacking a castle.

When we are in “hot water”, we are in trouble.___72____. A young boy can be in hot water with his mother, if he comes into the house with dirty shoes.

“To keep your head above water” is a colorful expression that means staying out of debt. A company seeks to keep its head above water during economic hard times. A man who loses his job tries to keep his head above water until he finds a new job.

Another common expression, “to hold water”, is about the strength or weakness of an idea or opinion that you may be arguing about. If is can hold water, it is strong and has no holes in it. If your argument can hold water, ___73____.If it does not hold water, ____74____.

“Throwing cold water” also is an expression that deals with ideas or proposals. ____75___.For example, you want to buy a new car because the old one has some problems. But your wife “throws cold water” on the idea, because she says a new car costs too much.

A.But many of the expressions using water have unpleasant meanings.

B.You are in a difficult position

C.A person who breaks a law can be in hot water with the police.

D.It means disliking an idea. E.It is strong and does not have any holes.

F.A man who loses his job tries to keep his head above water until he finds a new job.

G.Then it is weak and not worth debating.

单项选择题