Unit 7 What's the highest mountain in the world 单元综合自测-【课课帮】2023-2024学年八年级下册英语同步作业（人教版，辽宁专用）

118 Unit 7 单元综合自测 答案见193页(建议用时:40分钟) Ⅰ./新课标·命运共同体 /　 完形填空。(每小题1分, 共10分) 阅读下面短文,理解其大意,然后从各题所给的 四个选项中,选出可以填入空白处的最佳选项。 “Most polar bears could disappear by the end of the century because of global(全球的) warming,” scientists said. According to a study in Nature Climate Change, the number of polar bears wil 1 rapidly by 2080. There are two reasons. One is that the sea ice is melting(融化). Polar bears catch seals(海豹) to eat on the ice. 2 ice, they have to stay on land. But there is no 3 food on land to support so many bears. The animals could die from hunger. The other reason is that mother bears may not be fat enough to 4 milk for their babies, so some bears could stop having babies. Polar bears are 5 land animals that eat meat on the planet. They help control other kinds of animals. Losing them would break the balance of their living place. The Arctic(北冰洋) is the 6 to about 25,000 polar bears. Arctic sea ice usualy melts in spring and summer, and then grows in winter. But now, the 7 is taking longer to grow back. Scientists said the Arctic is warming twice as fast as the rest of the planet. The study also shows 8 it is possible to slow Arctic melting. Greenhouse gas(温室气体) can lead to climate change. Saving the bears is 9 us. One of the writers of the study said, “I believe there is hope, but humans need to act 10 to make that hope come true.” Let􀆳s take action to protect our Earth and save polar bears. ( )1. A.develop B.fal C.increase D.improve ( )2.A.Through B.Ac