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1、 1 Unit 4 Global warming 晨读晚诵 新知导学答疑解惑随堂练习 文章导语 Researchers have found a link between the heating up of the Earth and the size of mammals For example as temperatures went up the size of horses went down and vice versa Global warming could make humans shorter warn researchers who claim to have found
2、evidence 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 link between the heating up of the Earth and the size of mammals horses in this case 晨读晚诵 新知导学答疑解惑随堂练习 Researchers used fossils to f
3、ollow the evolution of horses from their earliest appearance 56 million years ago As temperatures went up their size went down and vice versa at one point they were as small as a house cat said Dr Jonathan Bloch curator of the Florida Museum of Natural History The researchers say that the current wa
4、rming could have the same effect on mammals and could even make humans smaller Horses started out small about the size of a small dog like a miniature schnauzer What s surprising is that after they first appeared they then became even smaller and then dramatically increased in size and that exactly
5、corresponds to the global warming event followed by cooling 晨读晚诵 新知导学答疑解惑随堂练习 It had been known that mammals were small during that time and that it was warm but we hadn t understood that temperature specifically was driving the evolution of body size Dr Bloch said in the Science journal 晨读晚诵 新知导学答疑
6、解惑随堂练习 译文 研究人员警告 全球变暖会让人类变矮 他们声称已经找到全 球变暖引起5千万年前最早出现的马变小的证据 事实上 一个来自佛罗里达州和内布拉斯加州的大学的团队声称 他们已经找到了全球变暖和哺乳动物体型大小之间的联系 这 一案例中的哺乳动物就是指的马 研究人员利用化石追溯马从5600万年前诞生至今的进化历程 随着温度的升高 它们的个头变小 反之则变大 它们曾一度像家猫 一样大 来自佛罗里达州的自然历史博物馆馆长乔纳森 布洛赫 博士这样说道 研究人员称 目前的变暖也许会对哺乳动物产生相同的影响 甚至会让人类的身高也变矮 晨读晚诵 新知导学答疑解惑随堂练习 马最初的个头很小 和小狗的个
7、头差不多 与迷你雪纳瑞犬不相 上下 让人惊讶的是 最初马诞生一段时间之后 它们的个子甚至 变得更小 之后又显著地变大 而这些变化和全球变暖以及之后的 变冷正好是一致的 布洛赫博士在 科学 杂志上发文说 众所周知 哺乳动物在当 时个头比较小 而且那时候气温较暖和 但我们还没意识到正是气 温驱使着身体大小的变化 典句欣赏 Global warming could make humans shorter warn researchers who claim to have found evidence that it caused the world s first horses to shrink
8、 nearly 50 million years ago 研究人员警告 全球变暖会让人类变 矮 他们声称已经找到 全球变暖引起5千万年前最早出现的马变 小的证据 晨读晚诵 新知导学答疑解惑随堂练习 1 From the passage we know that mammals become smaller A on account of the bad environment B due to the evolution C because of the global warming D for lack of food and water 2 What should we do in our
9、 daily life to reduce global warming 答案 C 答案 The answer may vary 理解诱思 8 Section Warming Up Pre reading Reading 倾向 3 random的副词 adv 胡乱地 4 oppose的形容词 adj 反对的 对立的 5 state的名词 n 陈述 说明 consumer tendency randomly opposed statement 晨读晚诵新知导学答疑解惑随堂练习 一二三四五 四 课文理解 1 made accurate measurements of the amount of c
10、arbon dioxide in the atmosphere from 1957 to 1977 A Dr Janice FosterB Charles Keeling C George HambleyD Sophie Armstrong 2 Some scientists like George Hambley think that the temperature increase will A cause a rise of several metres in the sea level B cause the spread of diseases and the disappearan
11、ce of species C encourage a greater range of animals D cause severe storms floods droughts and famines 答案 B 答案 C 晨读晚诵新知导学答疑解惑随堂练习 一二三四五 3 Which of the following is TRUE according to the text A Greenhouse gases refer to some byproducts of the burning of fossil fuels B The global warming is a random r
12、ather than natural phenomenon C The temperature in the last century increased by as high as 5 degrees D Fewer greenhouse gases will gather in the atmosphere 答案 A 晨读晚诵新知导学答疑解惑随堂练习 一二三四五 五 下面是课文原文的浓缩 仔细阅读并根据课文内容将其补充 完整 Sophie Armstrong explores how global warming has come about and 1 it matters becaus
13、e it is a rapid increase when 2 compare to other natural changes It s human activity 3 has caused this global warming Dr Janice Foster explains that even if greenhouse effect is a natural phenomenon we add huge 4 quantity of extra carbon dioxide into the atmosphere by burning fossil fuels From the s
14、econd graph and 5 discover of Charles Keeling all scientists believe that the burning of more and more fossil fuels has resulted 6 the increase in carbon dioxide whether compared that quantities discovery in 晨读晚诵新知导学答疑解惑随堂练习 一二三四五 However the attitudes of scientists towards the rise are 7 complete d
15、ifferent On the one hand Dr Foster thinks that any trend in which the temperature increases by 5 degrees would be a catastrophe On the other hand there are those like George Hambley who 8 oppose to the view He states that more carbon dioxide would encourage a 9 great range of animals and bring us a
16、better life The climate is going to keep on 10 warm for decades or centuries but no one knows the effects of global warming completely are opposed greater warming 新知导学答疑解惑随堂练习晨读晚诵 12345678 1 but it is a rapid increase when compared to other natural changes Page 26 但跟其他自然变化相比较而言 这却是一种快速的增长 考点 when compared to when compared to 是时间 状语从句的省略 其完整形式为when it is compared to 再如 Film has a much shorter history especially when compared to such art forms as music and painting 电影的历史短得多 尤其是它与诸如音乐 绘画等艺术 形式相 比较时
