只有精神病、自杀或杀人才属于心理问题。

已知∠AOB，P在OA上且OP=5厘米，点P关于直线OB的对称点是Q，那么OQ=(      )厘米．

急性脑血栓形成患者，用低分子右旋糖酐的目的是

A．抗凝治疗

B．血液稀释

C．早期溶栓

D．降解纤维蛋白

E．清除自由基

In the 1960s, medical researchers Thomas Holmes and Richard Rahe developed a checklist of stressful events. They appreciated the tricky point that any major change can be stressful. Bad events like “serious illness of a family member” were high on the list, but so were some helpful life changing events like marriage.

When you take the Holmes Rahe you must remember that the score does not show how you deal with stress -- it only shows how much you have to deal with. And we now know that the way you deal with these events dramatically affects your chances of staying healthy. By the early 1970s, hundreds of similar studies had followed Holmes and Rahe. And millions of Americans who work and live under stress worried over the reports. Somehow the research got boiled down to a memorable message. Women’s magazines ran titles like “Stress causes illness.”

If you want to stay physically and mentally healthy, the articles said, avoid stressful events. But such simplistic advice is impossible to follow. Even if stressful events are dangerous, many -- like the death of loved one--are impossible to avoid. Moreover, any warning to avoid all stressful events is a prescription for staying away from chances as well as trouble. Since any change can be stressful, a person who wanted to be completely free of stress would never marry, have a child, take a new job or move. The idea that all stress makes you sick also takes no notice of a lot of what we know about people. It supposes we're all vulnerable and not active in the face of the difficult situation. But what about human ability and creativity? Many come through periods of stress with more physical and mental strength than they had before. We also know that a long time without change or challenge can lead to boredom and physical and mental pressure.

小题1:.

The score of the Holmes Rahe test shows ____ .

A．how you can deal with life changing events

B．how helpful events can change your life

C．how stressful a major event can be

D．how much pressure you are under小题2:.

. Which of the following expressions has the meaning most close to the underlined phrase “got boiled down to” in paragraph two ?

A．was argued about

B．made clear

C．was concentrated on

D．put an end to小题3:.

. The studies on stress in the early 1970s led to ____ .

A．popular avoidance of stressful jobs

B．great fear over the mental disorder

C．a careful research into stress related illnesses

D．widespread worry about its harmful effects小题4:.

Why is “such simplistic advice ”(Line 2, Para.3) impossible to follow?

A．No one can stay on the same job for long.

B．More effective ways have been found to get rid of stressful events.

C．People have to get married some day.

D．You could be missing chances as well.小题5:.

. According to the passage people who have experienced ups and downs may become ____.

A．nervous when faced with difficulties

B．physically and mentally tired

C．more able to deal with difficulties

D．cold toward what happens to them

大部分合金的淬透性都比碳钢好。

工业废水按处理程度不同可分为三级，其中二级处理的主要方法是（）。

A、浮选项法

B、筛除法

C、曝气法

D、活性污泥法