Question

阅读理解 　　Do you know something about tree rings(年轮)? Do you know they can tell us what the weather was like, sometimes even hundreds of years ago? 　　A tree will grow well in a climate(气候)with lots of sunshine and rainfall．And little sunshine or rainfall will limit(限制)the growth 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 the tenth ring is far from the eleventh ring, then we’re sure that it was sunny and rainy most of that year．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 lot 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． Trees 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 trees were (3) If you want to find out the weather of twenty years ago, you should study ________． [　　] A． the twentieth ring B． the tenth ring C． the nineteenth ring D． the twenty-first ring (4) Why did people usually live in places 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 house (5) The people had to leave the place in New Mexico because ________． [　　] A． had weather stopped the growth of trees B． they no longer had water and the land became sand C． they didn’t have enough trees for burning D． there was too much rain there

Answer 1

答案：1．A;2．C;3．A;4．D;5．B;
解析：

(1)	“If the tenth ring is far from the eleventh ring, then we’re sure that it was sunny and rainy most of that year．”一句即是答案所在．
(2)	文章第一段“Do you know they can tell us what the weather was like…”和第三段的首句“Tree rings are important not only for studying the history of weather…”都有所暗示．
(3)	答案就在 “…to find out the weather of ten years ago, count the rings of a tree from the outside to the inside．If the tenth ring is far from the eleventh ring…”一句中．
(4)	短文最后一段说，人们建房做饭都离不开树木．人所居住的周围环境中如果没有了树木，那么人也就迁移了．所以答案为D．
(5)	根据最后两段所叙述的内容，再联系植物对人类的重要作用，则不难得出答案． 　　这篇短文介绍的是有关植物年轮方面的小知识．由于树木的生长要受到阳光、降水等方面的影响，从一棵树上的年轮分布情况上，可以推断出树木所生长地方以前的气候状况．年轮不仅对科学家研究地球上的气候环境有非常重要的参考价值，而且更为有趣的是，它还能帮助科学家们研究人类的历史呢．