Question

【題目】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(樹干) 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 “l(fā)ung（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】本文講的是亞馬遜雨林中的樹木的年輪可能會揭露雨林過去的氣候狀況，科學(xué)家想借此預(yù)測未來的雨林變化。

【1】句意：許多樹木當(dāng)它們生長的時候每年都產(chǎn)生年輪。A.當(dāng)…B.自從C.雖然D.在…之后，as引導(dǎo)時間狀語從句表示“當(dāng)…時”，長年輪和生長是同時發(fā)生的，用as做連詞恰當(dāng)，故選A。

【2】句意：當(dāng)樹木被砍倒的時候，可以在樹干部分看到這些年輪。A.聽到B.畫畫C.生產(chǎn)D.看到，年輪只能被“看到”，用被動語態(tài)be done表示，故選D

【3】句意：數(shù)一數(shù)這些圓環(huán)可以告訴我們這棵樹的年齡。A.圓環(huán)B.樹葉C.果實D.根，因為年輪是和樹木共同生長的，所以計數(shù)它們可以得到樹木的年齡信息，故選A

【4】句意：但是英國的科學(xué)家發(fā)現(xiàn)了一種方式，通過年輪來了解雨林過去的氣候。A.改變B.忘記C.發(fā)現(xiàn)D.想象，這是科學(xué)家發(fā)現(xiàn)的一種方式方法，后文做出了進一步敘述，故選C

【5】句意：這就意味著樹木依賴的是雨水而不是自然出現(xiàn)的深層地表的水。A.而不是B.關(guān)于C.因為D.由于，多虧了，這里是在描述雨林里的樹木取水的方式，是依賴雨水的，故選A

【6】句意：因此，樹干的年輪就能夠展示雨林過去的雨水情況。A.影響B.導(dǎo)致C.增加D.展示，這是得出的結(jié)論，因為樹木主要依賴雨水，所以年輪就能夠表明當(dāng)時的雨水情況。故選D

【7】句意：年輪能夠幫助我們理解雨水，甚至是過去100年中亞馬遜雨林的氣候。A.還未B.曾經(jīng)C.甚至D.仍然，這里是在描述年輪的作用，它能反應(yīng)雨水情況，推測甚至能反應(yīng)氣候情況，故選C

【8】句意：它是會變得更潮濕還是更干燥？A.品嘗B.聞C.聽起來D.變成，這里的it指的是雨林，提出發(fā)問，發(fā)問雨林是否會變化，故選D

【9】句意：亞馬遜雨林被稱作地球之肺由于其樹木每天從空氣中吸收的大量的二氧化碳。the trees take in from the air every day 部分是CO2 定語從句，其在定語從句中充當(dāng)賓語，用關(guān)系代詞that/which即可，故選B

【10】句意：變暖的世界可能會對這片重要的森林產(chǎn)生不好的影響，但是有著更多關(guān)于過去的信息，科學(xué)家們想要知道這片世界上最重要的雨林在未來會變成什么樣。A.人B.動物C.過去D.未來，通過前文我們知道年輪能夠展示雨林過去的信息，這也是科學(xué)家能夠了解到的，故選C