阅读理解 Do more species develop in warm, tropical climates or cooler, temperat

题文

阅读理解 Do more species develop in warm, tropical climates or cooler, temperate areas? It turns out thelongtime answer-the tropics - may be wrong. True, more different types of animals exist there than in places farther from the equator. New rearch suggests that is becau tropical species do not die out as readily. Cooler regionshave a higher turnover rate, with more species developing but also more becoming extinct. By analyzing the DNA of 618 mammal and bird species that lived in the past veral million years,they were able to determine that new species develop more readily farther away from the tropics. "It would take one species in the tropics 3 to 4 million years to evolve into two distinct species, whereas at 60 degrees latitude, it could take as little as 1 million years," weir said.    "In other words, there's a higher turnover of species in places like Canada, making it a hotbed of speciation, not the amazon," said Schluter.    That, however, is balanced by a higher extinction rate in colder climates, so the tropics still havemore diversity. It also rais the question of whether a more variable climate caus more rapid evolution. The next step is to look at changes in behavior and body form, comparing tropical and temperateareas.  Kenneth E. Filchak said, "scientists and naturalists have been wondering about patterns of diversity for well over a century. But the questions still hold a central place in science." He said the new report was "interesting and significant", for its look at the process of evolution andpatterns of diversity. One is left with the question of why.  Weir said the got interested in the topic while studying the effects of ice sheets on evolution. Theyfound that new species developed more rapidly in areas that had been covered with ice sheets than inregions that did not have ice cover. That caud them to widen the rearch to cover a larger area. 1. What did the subject discuss in the text? A. Species evaluate quickly in a variable climate.B. Species develop more in tropics than in temperate area.C. Species develop more quickly in cooler areas.D. Species have become extinct in cold climate. 2. Why do species develop slowly in tropics? A. Becau tropical species need more time to become different species.B. Becau tropical species have a long life.C. Becau tropical species in pattern of diversity are different.D. Becau tropical provide warm climate for species. 3. The rearchers still need to study ______. A. how different climates affect species growthB. what kind of climate makes species develop quicklyC. what are the effects of ice sheets on ecosystemD. if species in tropics and cooler areas change in behavior and body form 4. What makes less diversity in colder climates? A. The process of evolution.B. The ice sheets.C. A higher extinction rate.D. The cold climate. 5. This text is most probably taken from a ______. A. rearch paperB. newspaper reportC. class prentationD. geography textbook 题型：未知难度：其他题型

答案

1-5: CBDAA

解析

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考点

据考高分专家说，试题“阅读理解 Do more sp.....”主要考查你对 [日常生活类阅读 ]考点的理解。 日常生活类阅读

日常生活类阅读的概念：

日常生活这一话题主要涉及人们衣食住行等方面的活动。这一话题的选材主要针对人们日常的工作，生活以及学习情况。做这一类题时，最主要的是要把握好人物的活动内容，时间和地点。

日常生活类阅读题答题技巧：

【题型说明】该类文章内容涉及到人们的言谈举止、生活习惯、饮食起居、服饰仪表、恋爱婚姻、消遣娱乐、节日起源、家庭生活等。文章篇幅短小，追根溯源，探索各项风俗的历史渊源，内容有趣。命题也以送分题为主，如事实细节题、语义转换题、词义猜测题和简单推理判断题等。虽然这类文章读起来感觉轻松，试题做起来比较顺手，但绝不能掉以轻心。因为稍不留神，就会丢分。 【备考提醒】为了保证较高准确率，建议同学们做好以下几点： 1、保持正常的考试心态。笔者在教学中发现，越是容易的试题，同学们越是容易失分。为什么呢？因为在这种情况下，同学们极易产生麻痹思想，认为题目好做，就不引起高度重视，于是思维不发散、不周密。而命题人就是利用同学们的这一弱点，设计陷阱题。所以，无论试题难易与否，我们都要保持正常的考试心态。试题容易，不欣喜；试题难，不悲观。 2、根据前面讲到的方法，认认真真、细细心心做好事实细节题。 3、做好语义转换题。这类题是根据英语中一词多义和某些词语在文中能表达一定的修辞意义的原则而设计的。要求同学们解释某生词的含义，确定多义词或短语在文中的意思，确认文中的某个代词所指代的对象，或者对英语中特有的表达、格言、谚语进行解释。这种题要求同学们一定要根据上下文猜测词义或理解句子，切不可望文生义。 4、做好简单推理判断题。简单推理判断题要以表面文字为前提，以具体事实为依据进行推理，做出判断。这种推理方式比较直接，只要弄清事实，即可结合常识推断出合理的结论。