分析 本文屬于說明文閱讀,作者通過這篇文章主要向我們描述了人類到處都在改變著自然界的平衡,這些變化所帶來許多不可預(yù)見的后果
解答 26.C.細(xì)節(jié)理解題.根據(jù)第一段He is covering huge areas with new kinds of plants,or with houses,factories,slag-heaps and other products of his civilization.He exterminates some species on a large scale,but favors the multiplication of others可知反映人類改變自然平衡的例子包括用新的植物覆蓋其他種類,促進(jìn)動(dòng)物傳播到新的地區(qū)和大規(guī)模殺傷某些物種;故選C.
27.B.細(xì)節(jié)理解題.根據(jù)第二段Who would have thought that the throwing away of a piece of Canadian waterweed would have caused half the waterways of Britain to be blocked for a decade可知加拿大的一片水草導(dǎo)致英國的一半水道被封鎖了十年;故選B.
28.C.細(xì)節(jié)理解題.根據(jù)文章Who would have thought that improved communications would have changed history by the spreading of disease-sleeping sickness into East Africa,measles into Oceania,very possibly malaria into ancient Greece可知改進(jìn)的通信導(dǎo)致了疾病的傳播;故選C.
29.A.細(xì)節(jié)理解題.根據(jù)文章We make a nature sanctuary for rare birds,prescribing absolute security for all species; and we may find that some common and hardy kind of bird multiplies beyond measure and ousts the rare kinds in which we were particularly interested可知我們建造了一個(gè)稀有鳥類的自然保護(hù)區(qū)卻導(dǎo)致一些普通而又易生存的鳥類大量繁殖;故選A.
30.D.推理判斷題.根據(jù)文章Everywhere man is altering the balance of nature.He is facilitating the spread of plants and animals into new regions,sometimes deliberately,sometimes unconsciously可知這篇文章的主旨是人類到處都在改變著自然界的平衡;故選D.
點(diǎn)評 考察學(xué)生的細(xì)節(jié)理解和推理判斷能力,做細(xì)節(jié)理解題時(shí)一定要找到文章中的原句,和題干進(jìn)行比較,再做出正確的選擇.在做推理判斷題不要以個(gè)人的主觀想象代替文章的事實(shí),要根據(jù)文章事實(shí)進(jìn)行合乎邏輯的推理判斷.
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