关于产后出血的预防，下列说法错误的是（） A.密切观察产程进展，防止产程延长 B

阅读下面短文，用括号内所给动词的适当形式填空（必要时可加助动词或情态动词）。

     My name is John. I live in London, but I was born in Sydney, Australia. We (1)_______ (move) to

England two years ago when my dad got a new job here. I didn't want (2)_______ (leave) Australia because

I had a great life there. I had lots of friends and we went (3)_______(swim) almost every day after school.

And the weather was always great. I didn't like the life in London when we arrived at the beginning. I didn't

have any friends. I looked forward to (4)______ (return) to Australia. It was still winter, so the weather

(5) _______ (not be) very nice - it was really cold and it rained all the time! I (6) ______ (feel ) lonely and

wanted to go back to Australia. Things got better when I started school. All the kids at school were friendly

to me.

     Now I like living here. I have a new friend (7) ______ (name) Ben. At weekends, he usually (8) ______

(see) my grandparents with me. My parents like him very much. I think we (9) _______ (become) the best

friends in the future. How beautiful and great London (10) ______ (be)!

如图进化系统树表示几种生物的进化过程示意图，根据图回答下列问题

（1）A、B、C、D四种生物的共同祖先是______．

（2）与B生物亲缘关系最近的生物是______．

（3 ）在地层中出现最早的生物是______．

（4）生物进化的趋势是：从结构变化上看由______到复杂；从进化水平上看由低等到______；从生活环境变化上看由水生到______．

当地基强度较大时，墙高大于（）时不适宜采用短卸荷板式挡土墙。

A.6m

B.8m

C.10m

D.12m

对预压地基进行检验时，下述（）不是施工前检查的内容。

A．原始孔隙水压力

B．砂井位置

C．堆载高度

D．塑料排水带质量

性大寒，专泻肺中水饮及痰火而平喘咳的药物为

A．葶苈子

B．杏仁

C．桑白皮

D．前胡

E．竹沥