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1、此卷只装订不密封班级 姓名 准考证号 考场号 座位号 单元训练金卷高三英语卷（B）英语6 Units 3-5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。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1
2、5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。AIts known to all that rainforests are important. But do you know why?Tropical rainforests took between 60 and 100 million years to evolve (进化) and are believed to be the oldest and most complex landbased ecosystem on earth, containing ov
3、er 30 million species of plants and animals. Thats half of the Earths wild animal species and at least twothirds of its plant species! Rainforests store water. In fact, it is believed that the Amazonian forests alone store over half of the Earths rainwater! Rainforest trees draw water from the fores
4、t floor and release it back into the atmosphere. Without rainforests continually recycling huge quantities of water, feeding the rivers, lakes and irrigation systems, droughts would become more common.Do you know that we also depend on trees to cleanse (净化) our atmosphere? They absorb the carbon dio
5、xide that we breathe out, and provide the oxygen we need. However, when rainforest trees are burnt, they release carbon dioxide, which pollutes the atmosphere and contributes to global warming.Surprisingly, soil in the rainforest is very poor in nutrients. This is because the nutrients are stored in
6、 the huge numbers of trees and plants rather than in the soil. Tree roots bind the soil together, while the canopy (树荫) protects the soil from heavy rain. When a tree dies and its trunk falls to the forest floor, it breaks down and the nutrients it contains are recycled. However, if trees are remove
7、d from the forest, the nutrients are removed with it. Whats worse, the unprotected soil is then simply washed away by heavy rain, causing floods in lowland rivers while leaving upland rivers dry.Many local people have been living in harmony with the rainforest for thousands of years, depending on it
8、 for their food, shelter and medicines. When oil and logging companies come to remove vast areas of forest, they bring diseases which people there have no resistance to and threaten their survival. Often they are also forced to move away from their homes to unfamiliar places, sometimes even being ki
9、lled in the process.21.What can we learn about rainforests from Paragraph 2?A.They are impossible to recover once damaged.B.They are too old and complex to evolve themselves.C.They have fewer wild animal species than plant species.D.Theyre important homes to wild animal and plant species.22.Why does
10、 the author mention the poor soil in the rainforest?A.To stress the importance of trees to soil.B.To encourage improvement of soil there.C.To explain a very interesting phenomenon.D.To raise peoples awareness of protecting soil.23.What can we learn from the passage?A.We can burn rainforests to make
11、the land richer.B.We should do our best to prevent global warming.C.We should protect rainforests instead of destroying them.D.We can depend on many things to cleanse our atmosphere.BA new study has identified pollution as the worlds No.1 killer. Study organizers say pollution is responsible for mor
12、e premature deaths than war, terrorism, natural disasters, smoking and disease. By saying premature death, the researchers mean dying before the average age of death within a population group. Many of these deaths can be prevented.A report on the study was published in the medical journal The Lancet
13、. The researchers looked at pollution levels, both inside enclosed (封闭的) buildings and in the world around us. They concluded that pollution killed about 9 million people in 2015. That would represent one of every six deaths worldwide.Karti Sandilya helped to prepare the report. He said, “Pollution
14、damages fundamental human rights, such as the right to life, health, wellbeing, safe work as well as the protection of children and the most vulnerable (易受伤害的).”The report said the large majority of pollutionrelated deaths take place in developing countries. The researchers say leaders in those coun
15、tries are more concerned about building their economics and public services than environmental controls. Some of the most affected countries are Bangladesh, China, Haiti, India, Pakistan, North Korea and South Sudan.But Richard Fuller, another writer of the report, said pollution is tied to slow eco
16、nomic development in both rich and poor nations. He said, “Finance ministers still hold firmly that you have to let industry pollution or else you wont develop. What people dont realize is that people who are sick or dead cannot contribute to the economy. They need to be looked after.”The report said that 9 million
