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氣候變暖導(dǎo)致許多生物個體變小這一現(xiàn)象,氣候變化已對浮游生物產(chǎn)生了有害影響,人類需要盡快采取措施.
解答 67.D.主旨大意題.全文主要說明了氣候變暖導(dǎo)致許多生物個體變小這一現(xiàn)象,因此隨著天氣變暖物種變少最適合作本文標題;故選D.
68.A.詞義猜測題.根據(jù)句中的but可知,畫線詞所在部分與畫線詞前面的內(nèi)容"大氣中二氧化碳的增加將使生物個體變大"是轉(zhuǎn)折關(guān)系,從而可以推測氣溫、濕度、營養(yǎng)等的變化對生物的影響戰(zhàn)勝了二氧化碳增加的好處,即實際上生物個體變小了;故選A.
69.B.細節(jié)理解題.第三段研究人員提到"We do not yet know the exact mechanisms involved",其中"the exact mechanisms"指的是氣候變暖影響生物個體大小的確切原理,故選B.
70.A.細節(jié)理解題.根據(jù)第四段最后一句"There is a recent report on warmer temperatures'negative effects on plankton(浮游生物),the base of the marine ecosystem."可知,氣候變化已對浮游生物產(chǎn)生了有害影響,因此大家對此事?lián)鷳n的;故選A.
點評 考察學生的細節(jié)理解和推理判斷能力,做細節(jié)理解題時一定要找到文章中的原句,和題干進行比較,再做出正確的選擇.在做推理判斷題不要以個人的主觀想象代替文章的事實,要根據(jù)文章事實進行合乎邏輯的推理判斷.
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