（）汽缸压力不足，一般可判断为（）漏气，关闭不严漏气和（）冲坏等而引起的。

患者42岁，男性，昨晚睡眠过程中突然大叫一声，双眼上翻、双上肢屈曲，双下肢伸直，伴抽搐，呼之不应，伴咬舌，尿失禁，2～3分钟后清醒。醒后觉头痛，全身疼痛，其脑电图的表现哪一种可能性大（）

A．抗胆碱酯酶药量不足，增加抗胆碱酯酶药物的剂量

B．抗胆碱酯酶药物过量，停用抗胆碱酯酶药物

C．抗胆碱酯酶药物不敏感，增加抗胆碱酯酶药物的剂量

D．抗胆碱酯酶药量不足，停用抗胆碱酯酶药物

E．抗胆碱酯酶药物不敏感，停用抗胆碱酯酶药物

How Good Are US Drivers?

The CBS-TV“National Drivers’ Test”，showed that many US drivers have a lot to learn.Here’s why.

CBS picked 1799 sample drivers to take the test in TV studios in New York，Philadelphia，Chicago，and Los Angeles.More than two out of five of the drivers failed the test.And the average score was the lowest passing mark—51 points out of a possible 80.

Chicago drivers did best with an average of 53 points.Los Angeles drivers came next with 52 points.New York and Philadelphia drivers got 50 points—a failing score.Drivers with 50 points or less were rated“poorly informed”by the judges.

Here are some of the test results:

1.Are men drivers better informed than women ones?

Yes.Men averaged 52 points.Women got an average of 49.

2.Are older drivers better informed than younger drivers?

No.Drivers under 26 averaged 52 points.Drivers from 27 to 45 averaged 51.Drives over 45 failed with a 48-point average.

3.Does education make a difference?

Yes.College graduates averaged 52 points.High school graduates averaged 50.Those without high school diplomas(毕业证) got 48.And people who had taken driver education courses scored an average of 53 points—three more than those who hadn’t.

4.Does driving experience make a difference?

Yes.Drivers with three or more years of experience averaged 51 points.Drivers with less experience averaged 49.

Here are some surprising facts brought out by the test:

1.More than one out of three drivers did not know that a blinking red light means a full stop.

2.Three out of ten drivers did not know that an octagonal(eight-sided)sign means stop.

3.More than two out of three drivers did not know what to do when being“tailgated(追尾)”.

The answer:slow down，drive to the right，and let the driver behind pass.

The results of the test were turned over to the National Safety Council(委员会).They will help future safety planning.

小题1:The author’s purpose is to_________.

A．prove that men are better drivers than women

B．give you safe driving directions

C．tell you the results of a national drivers’ test

D．require you to get an education小题2:From the information in this article，which of the following is TRUE?

A．Older drivers are better informed than younger drivers.

B．Experience makes a difference among drivers.

C．Most drivers failed the test.

D．Most people don’ t know what a blinking red light means.小题3:The test covered the following areas about drivers except_________.

A．education

B．years of driving experience

C．sex

D．health小题4:Which of the following as a group was rated“poorly informed”by the judges?

A．Men.

B．High school graduated drivers.

C．Drivers from 27-45 years of age.

D．Drivers with 3 or more years of experience.

水是生命之源，海洋是生命的摇篮．国家海洋局在2004年中国海洋环境质量公报中发布，我国全海域海水水质污染加剧．开发海洋，维持海洋的可持续发展是每个地球公民的神圣职责．请回答下面关于海洋的几个问题：

（1）海水中资源丰富，含量最多的金属阳离子是______（填离子符号）．

（2）2006年6月初，渤海海域再次发生大面积赤潮．赤潮频发的主要原因之一是由于水体富营养化造成藻类疯长．某种藻类的主要化学成分为C₁₀₆H₂₆₃O₁₁₀N₁₆P，成分中C、N原子的个数比为______；与藻类疯长的密切相关的元素是______（填元素符号）．

（3）我国舟山盐场利用海水晒盐的原理是______．（填序号）

A．氯化钠的溶解度受温度影响较大，故采取冷却热饱和溶液的方法．

B．因氯化钠溶解度受温度影响不大，故采取蒸发水分的方法．

所得粗盐中主要含泥砂、氯化镁、氯化钙等杂质，现对其进行提纯，主要操作流程如下：

操作①的名称是______，操作②的名称是______．

（4）海水淡化是国际上研究的热点问题，我国科学家在利用高分子膜进行海水淡化的研究上取得了一些成绩．

如图，右侧为海水，左侧为经过一段时间后由右侧经高分子膜渗透得到的淡水，分析高分子膜必须具有的性是______．

国防具有两种功能：一是实战功能，二是（）

A、进攻功能

B、防御功能

C、威慑功能

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