题目

Global warming could make humans ___36___, warn scientists who __37___ to have found __38___ that it caused the world’s first horses to shrink nearly 50 million years ago. In fact, a team from the universities of Florida and Nebraska says it has found a __39___ between the Earth __40___ up and the size of mammals -- horses, in this __41__, the last time the world heated up. The scientists used fossils to __42___ the ___43___ of horses from their earliest appearance 56 million years ago. __44__ temperatures went up their size went __45__, and vice versa（反之亦然）; at one __46__ they were as small as a house cat, said Dr Jonathan Bloch, curator of the Florida Museum of Natural History, was quoted by the "Daily Mail" as saying. The scientists say that the __47___ warming could have the same __48__ on mammals -- and __49__ even make humans smaller. "Horses started out small, about the size of a small dog __50__ a miniature schnauzer(迷你型雪纳瑞犬). What`s surprising is __51__ after they first appeared, they then became even smaller and then __52__ increased in size, and that exactly __53__ to the global warming event, followed by cooling. "It had been known that mammals were small during that time and that it was warm, __54__we hadn’t understood that temperature specifically was __55__ the evolution of body size," Dr Bloch said in the "Science" journal. 36．A. taller                   B. higher                  C. shorter                      D. bigger 37. A. announce            B. claim                 C. declare             D. broadcast 38. A. evidence           B. result                 C. sign              D. information 39. A. difference           B. gap                  C. condition           D. link 40. A. heating              B. freezing              C. cooling             D. clearing 41. A. case                B. way                C. occasion            D. direction 42. A. find               B. follow               C. date                D. allocate 43. A. evolution            B. exploration           C. growth             D. movement 44. A. With                B. Because             C. While               D. As 45. A. up                  B. away               C. out                 D. down 46. A. situation             B. occasion          C. point                D. place 47. A. international          B. current            C. past                 D. huge 48. A. effect               B. result              C. consequence          D. outcome 49. A. could              B. must              C. should            D. would 50. A. as                  B. like                C. with              D. of 51. A. whether             B. when             C. that                D.  why 52. A. specially             B. fortunately           C. eventually         D.  dramatically 53. A. agrees               B. subscribes          C. corresponds       D. caters 54. A. so                B. but               C. and                D. for 55. A. driving              B. creating           C. working           D. operating 答案：36. 选C。全球变暖会使人类变矮。下文出现。 37. 选B。声称已经找到全球变暖将5千万年前最初出现的马变小的证据的科学家警告人们。 38. 选A。同上。 39. 选D。一个来自福罗里达州大学和内布拉斯加大学的团体说他们已经发现了全球变暖和哺乳动物的大小的联系。 40. 选A。同上。 41. 选A。这一案例中马变矮的现象是上一次全球变暖时发生的。 42. 选B。科学家用化石来追溯马从5600万年前诞生至今的进化历程 43. 选A。同上。 44. 选D。随着气温的上升，马的个头变小，反之马的个头就变大。 45. 选D。同上。 46. 选C。《每日邮报》引用佛罗里达自然历史博物馆馆长乔纳森•布洛赫博士的话说，它们曾一度像家猫那么小。At one point 一度，曾经。 47. 选B。科学家称，当前的全球变暖可能也会对哺乳动物产生同样的影响，甚至可能会让人类的个子也变小。 48. 选A。同上。 49. 选A。could表可能性。 50. 选B。布洛赫博士在《科学》杂志中写道：“马最初的个头很小，和一只小狗的个头差不多，大约也就像一只迷你型雪纳瑞犬那么大。 51. 选C。令人惊讶的是，在马诞生后过了一段时间，它们的个子变得更小，之后个头又显著变大，而这些变化与全球变暖和变冷正好是相对应的。 52. 选D。同上。dramatically显著地。 53. 选C。同上。Correspond to和……一致。 54. 选B。“我们已经知道哺乳动物在那个时期个头较小，而那个时期气候也较暖，但我们还未意识到正是温度驱动着身体大小的进化。” 55. 选A。同上。drive 驱使。

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