生育年龄的妇女，血中雌激素分泌的第一个高峰是在（） A.月经中 B.月经周期第一周

单词拼写

根据下列句子所给汉语注释,在句中的横线上写出空缺处各单词的正确形式

1.  Generally, it is good________(礼貌) to shake hands with others.

2.  Drinking alcohol in a restaurant under 16 years old is _______(禁止) in Britain.

3.  As an old saying goes, "Blood is ________(浓的) than water."

4.  When I entered the classroom, the students all looked at me _______.(好奇地)

5. December is the _________(第十二)month of a year.

6. How many _________(德国人) are going to visit their town next month?

7. Thank you for your _______ (邀请) me to your birthday party.

8. Who was in ________(负责) of the class when Mr. Smith was in hospital?

9. Our headmaster told me that meeting was of great          (价值).

10. The new idea was gradually          (认可) by many people.

正常食管内的pH值是（）

A.2.5～4.0

B.3.5～5.0

C.4.5～6.0

D.5.5～7.0

E.6.5～8.0

螺纹配合的松紧度应以（）为准，过紧（），过松（）。

简述气功疗法的作用及种类。

新氢压缩机开机时负荷开关置于（）%。

A、25

B、0

C、50