预防会阴撕裂的关键是A．协助胎头俯屈，让胎头以最小径线在宫缩间歇时缓慢通过 * * 口 B

根据下面每句句意、汉语提示或英语解释，写出空白处所缺单词的正确形式，每空一词。

1. Fans of Apple products around the world will         (怀念) Steve Jobs after his death.

2. Chinese culture is becoming more and more popular in         (西方的) countries.

3. Huanyan Island was discovered and drawn onto the         (地图) of China during the Yuan Dynasty.

4. It is reported that many people send         (more than) 500 messages by mobile phone every week.

5. I don't like the book at all, because it is         (dull; not interesting).

下列关于粪大肠菌群的叙述中，正确的是（）

A.系一群需氧及兼性厌氧的杆菌

B.系革兰阳性杆菌

C.不能产生芽胞

D.能发酵乳糖

E.能产酸能产气

一次单株选择法主要应用于自花授粉作物。

在家乡建造“萃和堂”让全族过起“大同”生活的思想家是（）

A.颜钧

B.何心隐

C.王阳明

D.陆九渊

治疗郁证的主穴是( )

A．内关、郄门、神门、巨阙
B．四神聪透百会、神庭透上星
C．照海、申脉、神门、印堂
D．内关、水沟、丰隆、后溪
E．内关、水沟、太冲、神门