第1部分 七年级(下) Units 5-8-【众相原创·赋能中考】2024年中考英语练习册（贵州专用）

七年级（下） Units 5 ~8 一、完形第一节(2023贵阳乌当区模拟)】 conditions in a place over a long period of time (30 A.in B.and C.a D.but years or more）. E.another F.poor G.danger Scientists at the National Weather Service have been keeping track of weather in the United States Chinese pangolins live since 1891.But trees can keep a much longer in the south of Yangtze Chinese pangolin record of Earth's climate.In fact,trees can live for River. The long-tailed hundreds -and sometimes even thousands of animals spend most of the daytime sleeping.They years. have 1. eyesight(视力)so they have to One way that scientists use trees to learn about use their noses to find insects for food at night. past climate is by studying a tree's rings.If you've They spend a lot of time digging the earth for food ever seen a tree stump(树桩)，you probably 2. they help protect trees in the forests. noticed that the top of the stump had some rings. But now experts say that Chinese pangolins are These rings can tell us how old the tree is,and in great 3. They can no longer play an what the weather was like during each year of the important role in the wild.Beijing Neies reported tree's life.The light-colored rings represent wood that there wouldn't be more baby pangolins in the that grew in the spring and early summer,while the wild.The population of pangolins would be smaller dark rings represent wood that grew in the late and smaller.According to 4. national summer and fall.One light ring and one dark ring wildlife survey,there were about 60,000 Chinese represents one year of the tree's life. pangolins 5. the 1990s.Since then,this Because trees are sensitive to local climate number has fallen by 90 percent.One of the main conditions,such as rain and temperature,they give reasons is the worse pollution,and 6. scientists some information about that area's local reason is that many people kill them for their meat. climate in the past.For example,tree rings usually It's believed by some that their meat is good for grow