肝硬化患者最严重的并发症，也是最常见的死亡原因的是（）。 A.食欲减退 B.肝性脑病

下列不属于土木工程的三大基础材料的是（）.

A.水泥

B.混凝土

C.钢材

D.木材

()是职前培训与开发中被广泛采用的一种方法，适用于具有机械性特点的工种。

A.案例研讨法 

B.操作示范法 

C.讲授法 

D.角色扮演法

阅读理解。

                                                                  Water Safety

To Rescue a Drowning Person 　　

     Don't jump in to save a drowning person unless you are a trained lifesaver. The victim may pull you under. 　　

     Instead, try to toss (抛) a life preserver if you have one. Anything that will float can save the person's life.

A beach ball, a vacuum jug, or a picnic chest will also help. The National Safety Council points out that many

drowning could be prevented if people knew all the common objects that float well enough to help a drowning

person. 　　

     If you are in a boat, or you can find one, use the boat to try to reach the person in trouble. Turn the boat

so the victim can grab the stern. Don't stand up to help the victim. Stay seated so the boat won't overturn. Try

to balance the boat as the person climbs aboard. If the boat overturns, stay hanging on to the side for a while

to relax before trying to right it.

1. What kind of things should you throw to a person in trouble in the water? 　　[ ]

A. A belt. 　　

B. A cardboard box. 　　

C. Something that floats. 　　

D. Something large and heavy.

2. Which sentence belongs to the empty box?

    [ ]

A. Jump into water and swim to them.　　

B. Paddle the boat towards the coast.

C. Stand up and shout for help.

D. Turn rear (后部) of boat towards the person in the water.

3. The first paragraph helps the reader understand why _____. 　　[ ]

A. there are so few drowning accidents 　　

B. people are often drowned themselves when they try to save a drowning person 　　

C. so many drowning people are able to save themselves 　　

D. it is important to drink plenty of fluids before swimming

4. Where would you be most likely to find a passage like this? 　　[ ]

A. In a home medical encyclopedia (百科全书). 　　

B. In a humorous story about a couple who sail around the world. 　　

C. In a newspaper account of the National Cup sailing competition.

D. In a science text.

做子宫与附件切除时，切断哪条韧带容易损伤输尿管

A．主韧带
B．圆韧带
C．阔韧带
D．骶骨韧带
E．骨盆漏斗韧带

当发生火灾的建筑物或者局部出现（）的危险，直接威胁人身安全、妨碍灭火战斗行动时，可以进行破拆。