题目内容
与森林生态系统相比，农田生态系统的下列哪种生产力指标与总生产力的比值相对较高（）A．初级总生产力 B、初级净生产力 C、群落净生产力 D、次级生产力
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把一束光线射到平面镜上，已知入射光线与镜面的夹角是40°，则入射光线的入射角是 ，反射光线与人射光线之间的夹角是 ．
物体的内能是指（） A．物体的动能和势能的总和 B．物体内所有分子势能的总和 c．物体内所有分子动能的总和 D．物体内所有分子无规则运动的动能和势能的总和
Part A
Directions: Read the following four texts. Answer the questions below each text by choosing A,B, C or D. Mark your answers on ANSWER SHEET I. (40 points)
Text 1
We can make mistakes at any age. Some mistakes we make are about money. But most mistakes are about people. "Did Jerry really care when I broke up with Helen？ .... When I got that great job, did Jim really feel good about it, as a friend？ Or did he envy my luck？" "And Paul—why didn't pick up that he was friendly just because I had a car？" When we look back, doubts like these can make us feel bad. But when we look back, it' s too late.
Why do we go wrong about our friends or our enemies？ Sometimes what people say hides their real meaning. And if we don' t really listen we miss the feeling behind the words. Suppose someone tells you, "You' re a lucky dog." That' s being friendly. But "lucky dog？" There's a bit of envy in those words. Maybe he doesn't see it himself. But bringing in the "dog" bit puts you down a little. What he may be saying is that the doesn't think you deserve your luck.
"Just think of all the things you have to be thankful for," is another noise that says one thing and means another. It could mean that the speaker is trying to get you to see your problem as part of your life as a whole. But is he？ Wrapped up in this phrase is the thought that your problem isn’t important. It' s telling you to think of all the starving people in the world when you haven' t got a date for Saturday night.
How can you tell the real meaning behind someone' s words？ One way is to take a good look at the person talking. Do his words fit the way he looks？ Does what he says agree with the tone of voice？
His posture？ The look in his eyes？ Stop and think. The minute you spend thinking about the real meaning of what people to you may save another mistake.
21. This passage is mainly about______.
To avoid the pain of a drilling that may last perhaps a minute or two, we demand the "needle"— a shot of novocaine (奴佛卡因) -that deadens the nerves around the tooth.
Now it' s true that the human body has developed its millions of nerves to be highly aware of what goes on both inside and outside of it. This helps us adjust to the world. Without our nerves—and our brain, which is a bundle of nerves— we wouldn't know what's happening. But we pay for our sensitivity. We can feel pain when the slightest thing is wrong with any part of our body. The history of torture is based on the human body being open to pain.
But there is a way to handle pain. Look at the Indian fakir(行僧) who sits on a bed of nails. Fakirs can put a needle right through an arm, and feel no pain; This ability that some humans have developed to handle pain should give us ideas about how the mind can deal with pain.
The big thing in withstanding pain is our attitude toward it. If the dentist says, "This will hurt a little, it helps us to accept the pain. By staying relaxed,' and by treating the pain as an interesting sensation, we' can handle the pain without falling apart. After all; although pain is an unpleasant sensation, it is still a sensation, and sensations are the stuff of life.
26. The passage is mainly about______.
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