2020-2021学年度高二下学期英语单元双基精品试卷 选修七 Unit3 Under the sea_Unit4 Sharing (B）（含答案）

-1106805339725此卷只装订不密封 班级 姓名 准考证号 考场号 座位号 此卷只装订不密封 班级 姓名 准考证号 考场号 座位号 2020-2021学年度高一下学期英语单元双基精品试卷 选修七 Unit3 Under the sea_Unit4 Sharing （B） 阅读理解 A There are many dangerous sea creatures in the world. The following are some examples. The needlefish are commonly seen living near the surface of tropical(热带的) waters. But they can also break cover the water, and once in the air they can become dangerous flying swords. Though it is rare, people have been seriously hurt and even killed by the fish. Night fishermen in small boats are at particular risk because their lights may attract the fish. Saltwater crocodiles are the world's largest crocodiles, sometimes reaching 23 feet in length and topping 2,200 pounds. Yet these crocodiles hunt quietly, lying in wait below shoreline waters to attack turtles and thirsty animals that have come to drink. Saltwater crocodiles kill a number of people each year. There is no doubt that the great white shark sits atop the ocean food chain. The world’s largest fish can weigh at over 5,000 pounds and reach lengths of more than 20 feet. Great white sharks have about 3,000 teeth, which they typically sink into sea lions, seals, and sea turtles. These sharks are responsible for a third to a half of the 100 shark attacks on humans every year. The sea anemone(海葵) may look like the beautiful flower for which it’s named, but fish that swim too close may regret it. The sea anemone, which lives on the sea floor, uses its poisonous tentacles(触须) to stab passing creatures with a kind of poison — making them helpless and fit to be eaten. The surgeonfish(刺尾鱼) is an attractive reef fish that is poisonous. Scientists believe that the world’s seas hold some 1,200 different surgeonfish species and think that they injure about 50,000 people per year. But the surgeonfish poison can also bring great benefit — they are useful in the development of new drugs. 1. The underlined phrase “break cover” in Paragraph 2 probably means . A. jump out of B. break away from C. get away from D. go back to 2. How many attacks on humans do great white sharks do every year? A. About 26. B. About 45. C. About 60. D. About 75. 3. It can be learned from the passage that . A. the saltwater crocodiles are gentle and never hurt people B. the sea anemone lives near the surface of the sea C. the great white shark is the largest fish in the world D. the needlefish live in the sea all around the world 4. Which of the following can be used to benefit human society? A. The needlefish. B. The sea anemone. C. The great white shark. D. The surgeonfish. B Society tells us that we should count our blessings, focus on all that we have and feel grateful for what we’ve been given. But there is nothing wrong with “healthy discontent”. In fact, healthy discontent is what motivates us to improve ourselves and our circumstances. Without this feeling, life’s easier to stand still. I always ha ... ...