绝密 ★ 启用前 2018-2019学年上学期高一第一次月考卷 英 语 （A） 注意事项： 1.答题前，先将自己的姓名、准考证号填写在试题卷和答题卡上，并将准考证号条形码粘贴在答题卡上的指定位置。用2B铅笔将答题卡上试卷类型A后的方框涂黑。 2.选择题的作答：每小题选出答案后，用2B铅笔把答题卡上对应题目的答案标号涂黑，写在试题卷、草稿纸和答题卡上的非答题区域均无效。 3.非选择题的作答：用签字笔直接答在答题卡上对应的答题区域内。写在试题卷、草稿纸和答题卡上的非答题区域均无效。 4.考试结束后，请将本试题卷和答题卡一并上交。 第Ⅰ卷 第一部分 听力（共两节，满分 30 分）(略) 第二部分 阅读理解（共两节，满分40分） 第一节（共15小题：每小题2分，满分30分） 阅读下列短文，从每题所给的四个选项（A、B、C和D）中选出最佳选项，并在答题卡上将该项涂黑。 A It has long been thought that elephants rely on their large ears and bathing in rivers to stay cool in hot climates. New research，however，has showed that the world's largest land animals have a secret trick of controlling their body temperatures. Scientists have long been puzzled by temperature regulation(调节)in elephants. Generally，animals with large bodies tend to hold more heat because，compared to their size，they have a small surface area for heat to escape from. Elephants，with their heavy-weight frames，would appear to be at a disadvantage in the heat of their African and Asian habitats，especially because they have thick fur to protect them from bushes and trees. Scientists thought that these creatures，which weigh up to 13 tons when fully-grown，grow large ears to help them stay cool. The skin on the ears is thinner，so blood which flows into them cools down more easily. But findings by researchers at two universities in Vienna have showed that elephants are also able to cool down by increasing the blood flow to skin patches(斑) in other parts of their bodies. The researchers studied six African elephants at Vienna Zoo as they moved between outdoor and indoor environments to see how the temperature on their skin surface would change. They found up to 15 “hot spots” all over an elephant's body surface，in addition to large patches on the ears. The study shows how these patches expand as the air temperature increases and more blood flows nearer to the skin surface. Other experiments show that elephants in the wild use the same “windows” to control their body temperature. Elephants have two additional ways to stay cool: flapping(拍打)the ears and bathing. Together with these tricks，the skin hot spots allow the animals to keep their body temperature always at about 36 degrees—one degree less than humans'. 21. What can we know about the elephants? A. They have thick fur to protect them. B. They live in cool areas in Africa and Asia. C. They can weigh up to 3 tons when fully-grown. D. They are afraid of water and rivers. 22. The fun_ction of the thinner skin on elephants' ears is to_____. A. control their body temperature B. help hold more heat C. drive away insects D. keep sensitive hearing 23. The new research_____. A. studied six A ... ...
