山西省永济中学2020届高三上学期开学模拟训练英语试题

永济中学2019—2020学年度高三第一学期开学模拟训练 英　语　试　题 第一部分 阅读理解（共两节，满分60分） 第一节　（共15小题，每小题3分，共45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 The zebra belongs to the horse family. One of nature’s great mysteries is why the zebra has stripes . One theory is that the stripes help the zebra cool down. On hot days the black stripes get a lot hotter than the white area of the zebra and under the black stripe s there are special layers of fat for protection. Hot air then rises off the black stripes, forcing colder air down around the white areas, cooling the zebra down. This, however, is just a kind of theory. The stripes can also confuse predators（食肉动物，掠夺者）when zebras stay with other animals in great numbers. Zebras have excellent hearing and eyesight and can run at speeds of up to 56 kilometers per hour. They also have a powerful kick that can cause serious injury to a predator, like a lion, or an African wild dog. Usually the lead male of the herd stays at the back of the group to defend