Question

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　　Do you know something about tree rings(年轮) ?Do you know they can tell us what the weather was like, something even hundreds of years ago?

　　A tree will grow well in a climate lots of sunshine and rainfall. And little sunshine or rainfall will limit the growth of a tree. We can see the change of climate by studying the tree rings. For example，to find out the weather of ten years ago，count the rings of a tree from the outside to the inside，if it is near to the eleventh ring，then the climate that year was bad.

　　Tree rings are important not only for studying the history of weather but also for studying the history of man. Many centuries ago there lived a 1ot of people at a place in New Mexico. But now you can find only sand there--no trees and no people. What happened?

　　A scientist studied the rings of dead trees there. He found that the people had to leave because they had cut down all the trees to make fires and buildings. As all the trees had gone，the people there had to move.

(1) ________ in good climate.

[　　]

A. Tree rings grow far from each other

B. Tree rings become thinner

C. tree don't need sunshine or rainfall

D. people can cut down most of the trees

(2) The scientists are interested in studying tree rings because tree rings can tell ________ .

[　　]

A. whether a tree was strong or not

B. whether people took good care of the trees or not

C. whether the climate was good or not

D. how old the tress were

(3) If you want to find out the weather of twenty years ago，you should study ________ of a tree from the outside to the inside.

[　　]

A. the twentieth ring

B. the tenth ring

C. the nineteenth ring

D. the twenty-first ring

(4) Why did people usually live in place with lots of trees?

[　　]

A. Trees could tell the change of the weather.

B. Trees brought lots of sunshine and rain.

C. Trees could make weather not too hot or too cold.

D. Trees could be used for burning and for building houses.

(5) The people had to leave the place in New Mexico ________ .

[　　]

A. because bad weather stopped the growth of trees

B. because they no longer had water and the land became sand

C. because they didn't have enough trees for burning

D. because there wasn't too much rain there

Answer 1

答案：A;C;A;B;D
解析：

(1) A 第二段的末尾谈到if it is near to the eleventh ring，then the climate that year was bad，依此推出在好的天气里，树的年轮之间的距离要大一些 (2) C 从第二段的We can see the change of climate by studying the tree rings一句可以看出树木年轮的作用 (3) A 从第二段中所举的例子可以推出本题的答案 (4) B 从第二段的叙述中可以知道本题的答案 (5) D 从New Mexico现在的状况可以知道本题的答案