【题目】根据短文内容,从短文后的选项中选出能填入空白处的最佳选项。选项中有两项为多余选项。
Coral reefs
For millions of years, coral reefs have provided homes and food for thousands of different living things. Fish and sea birds share the reef with other sea creatures. Now these beautiful places are in danger. 【1】 Scientists have found that people and pollution have ruined more than one-fourth of the earth’s coral reefs. Unless things change, all of the remaining reefs may die within your lifetime.
Some people think that coral is stone because of its rough, hard surface. But coral is an animal! Tiny polyps (水螅体) form the coral reefs. 【2】 These colours come from the algae (海藻) living inside the coral. Billions of coral polyps stick together. New ones grow on the dead corals. This happens year after year. Over time, the coral builds up a reef. The reef rises from the ocean floor until it almost reaches the sea’s surface. It takes coral 500,000 years to build a huge reef. 【3】
The coral reefs have been harmed in different ways. People have broken off pieces of coral. They wanted to sell or keep them. To catch more fish, people have dropped sticks of dynamite (炸药) into the water. 【4】 Water pollution has encouraged overgrowth of the sea plants that grow near coral reefs. They block out the sunlight that the algae need. 【5】 Warm water kills the algae. When the algae die, the coral loses both its food and its color. The coral turns white and dies. Scientists call this coral bleaching (珊瑚白化). The
A. They come in many colours.
B. This has blown up parts of the reefs.
C. So are all the sea plants and animals that depend on them.
D. The worst problem is the heating up of the world’s oceans.
E. Coral reefs are experiencing a rapid increase in most locations.
F. However, it has taken human beings less than 100 years to destroy the reefs.
G. They cover less than 1% of the ocean floor, but support about 25% of sea creatures.
【答案】
【1】C
【2】A
【3】F
【4】B
【5】D
【解析】
试题分析:本文是说明文。文章主要介绍了珊瑚礁的形成及人类对珊瑚礁的破坏。
【1】C由该空前的Fish and sea birds ... these beautiful places are in danger可知,珊瑚礁处于危险中,依赖珊瑚礁生存的海洋植物和动物也处在危险中,所以答案是C。
【2】A由该空后的These colours come from ...可知,设空处指“珊瑚色彩斑斓”,所以答案是A。
【3】F 由该空前的It takes coral 500,000 years to build a huge reef以及下一段的描述可知,珊瑚需要花50万年的时间才能形成巨大的珊瑚礁,而人类用不到100年的时间就开始破坏它,所以但是F。
【4】B由该空前的people have dropped sticks of dynamite into the water可知,这样会炸毁部分珊瑚礁,所以答案是B。
【5】D由该空后的Warm water kills the algae可知,最糟糕的问题是世界海洋的升温,所以答案是D。
科目:高中英语 来源: 题型:
【题目】8:30 PM----Outlook
Outlook is back with a new series of reports to keep you informed of all that’s new in the world of entertainment. Stories go all the way from the technical to the romantic, from stage to screen. There will be reports of the stars of the moment, the stars of the future and the stars of the past. The director with his new film, the designer with the latest fashion, and the musician with the popular songs are part of the new Outlook. The program is introduced by Fran Levine.
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When a 10-year-old boy gets a first class degree in mathematics or an 8-year-old boy plays chess like a future grand master, they are considered as geniuses. Where does the quality of genius come from? Is it all in the genes or can any child be turned into a genius? And if parents do have a child who might become a genius in the future, what should they do? In this 30-minute film, Barry Johnson, the professor at School of Medicine, New York University will help you discover the answer.
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Is it possible to beat high blood pressure without drugs? The answer is “yes”, according to the researchers at Johns Hopkins and three other medical centers. After a study of 800 persons with high blood pressure, they found that after 6 months, those devoted to weight loss, exercise and eating a low-salt, low-fat food lost about 13 pounds and became fitter. Plus, 35% of them dropped into the “normal” category(范畴). This week, Dr. Alan Duckworth will tell you how these people reduce their blood pressure to a level similar to what’s achieved with Hypertension(高血压) drugs.
【1】The main purpose of writing these three texts is ________.
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C. to attract more students to attend lectures
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【2】From Outlook, you can get a great deal of information about ________.
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【题目】阅读下面材料,在空白处填入适当的内容(不多于3个单词)或括号内单词的正确形式。
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Dear Diary,
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