Question

【题目】Trees in the Amazon rainforest are showing scientists the past in order to help them predict the future.

Have you heard about tree rings ? Some trees create rings every year ________they grow. These rings can be ______in the tree trunks when the trees are cut down .Counting tree ______can tell us how old the tree is , but UK scientists have ________a way of learning about the climate of the rainforest in the past from the tree rings .

Growing in the Amazon rainforest, some trees only have short roots. This means that the trees depend on rain water, _______ the water that naturally occurs deeper underground . Therefore, the rings of tree trunks(树干) can _______the rainfall in the forest in the past.

The rings can help us understand the rainfall, _______the climate of the Amazon forest over the last 100 years .What scientist want to know, however, is how the rainforest will be affected by the world’s rising temperatures. Will it _______wetter or drier? The Amazon rainforest is known as the “lung（肺） of the earth ” for the amount of CO2 _______the trees take in from the air every day. A warming world could have a very bad effect on this important forest, but with more information about the ______ , scientists hope to know what one of the most important rainforests in the world will be like in the future .

【1】A. as B. since C. although D. after

【2】A. heard B. drawn C. produced D. seen

【3】A. rings B. leaves C. fruits D. roots

【4】A. changed B. forgotten C. discovered D. imagined

【5】A. rather than B. as for C. because of D. thanks to

【6】A. influence B. cause C. increase D. show

【7】A. yet B. ever C. even D. still

【8】A. taste B. smell C. sound D. become

【9】A. when B. that C. where D. why

【10】A. humans B. animals C. past D. future

Answer 1

【答案】

【1】A

【2】D

【3】A

【4】C

【5】A

【6】D

【7】C

【8】D

【9】B

【10】C

【解析】本文讲的是亚马逊雨林中的树木的年轮可能会揭露雨林过去的气候状况，科学家想借此预测未来的雨林变化。

【1】句意：许多树木当它们生长的时候每年都产生年轮。A.当…B.自从C.虽然D.在…之后，as引导时间状语从句表示“当…时”，长年轮和生长是同时发生的，用as做连词恰当，故选A。

【2】句意：当树木被砍倒的时候，可以在树干部分看到这些年轮。A.听到B.画画C.生产D.看到，年轮只能被“看到”，用被动语态be done表示，故选D

【3】句意：数一数这些圆环可以告诉我们这棵树的年龄。A.圆环B.树叶C.果实D.根，因为年轮是和树木共同生长的，所以计数它们可以得到树木的年龄信息，故选A

【4】句意：但是英国的科学家发现了一种方式，通过年轮来了解雨林过去的气候。A.改变B.忘记C.发现D.想象，这是科学家发现的一种方式方法，后文做出了进一步叙述，故选C

【5】句意：这就意味着树木依赖的是雨水而不是自然出现的深层地表的水。A.而不是B.关于C.因为D.由于，多亏了，这里是在描述雨林里的树木取水的方式，是依赖雨水的，故选A

【6】句意：因此，树干的年轮就能够展示雨林过去的雨水情况。A.影响B.导致C.增加D.展示，这是得出的结论，因为树木主要依赖雨水，所以年轮就能够表明当时的雨水情况。故选D

【7】句意：年轮能够帮助我们理解雨水，甚至是过去100年中亚马逊雨林的气候。A.还未B.曾经C.甚至D.仍然，这里是在描述年轮的作用，它能反应雨水情况，推测甚至能反应气候情况，故选C

【8】句意：它是会变得更潮湿还是更干燥？A.品尝B.闻C.听起来D.变成，这里的it指的是雨林，提出发问，发问雨林是否会变化，故选D

【9】句意：亚马逊雨林被称作地球之肺由于其树木每天从空气中吸收的大量的二氧化碳。the trees take in from the air every day 部分是CO2 定语从句，其在定语从句中充当宾语，用关系代词that/which即可，故选B

【10】句意：变暖的世界可能会对这片重要的森林产生不好的影响，但是有着更多关于过去的信息，科学家们想要知道这片世界上最重要的雨林在未来会变成什么样。A.人B.动物C.过去D.未来，通过前文我们知道年轮能够展示雨林过去的信息，这也是科学家能够了解到的，故选C