Unit 3 单元检测试题君之K三关高二英语人教版选修7.docx

1、Unit 3 单元检测试题君之K三关高二英语人教版选修7Unit 3 Under the sea单元检测.阅读理解 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。A The deep ocean plays a vital role in keeping our fishing and removing CO2 from the atmosphere, as well as being home to a large number of creatures. But a new study reveals that food supplies at the seaflo

2、or in the deepest regions of the ocean could fall by up to 55% by 2100, starving the animals and microbes(微生物) that exist there, while changes in the temperature, pH and oxygen levels are also predicted to cause lots of damage to fragile ecosystems. The situation, the researchers note, is worse beca

3、use of drilling for oil and gas, dumping of pollutants, fishing and the prospect of deep-sea mining. We need to wake up and start really realising that with the deep ocean, even though we cant see it.were going to be having a huge effect on the largest environment on the planet, said Andrew Sweetman

4、, the co-author of the research. Its pretty scary. The study describes how the team explored how oceans around the world are set to change over the 21st century. We wanted to look at how all of these combined stressors warming, raised acidification, reduced food supplies to the seafloor, deoxygenati

5、on would work together to affect the ocean, said Sweetman. The results reveal that the future of the deep sea is weak. By 2100 ocean conditions will have changed obviously, with so-called bathyal depths (waters reaching roughly 200 metres to 3,000 metres in depth) in the Pacific, Atlantic and Arctic

6、 Oceans increasing in temperature by up to 4. Warming oceans are expected to result in lower oxygen concentrations, with levels predicted to fall in bathyal seafloor habitats by up to 3.7%. But even small changes, said Sweetman, could have a large impact, resulting in disruptions (扰乱) to fragile eco

7、systems that exist on the edges of regions with very low oxygen. Adrian Glover, an expert in deep oceans from the Natural History Museum in London who was not involved in the research, welcomed the study. It must be stressful, however, that actual data on changes in deep-sea ecosystems are extremely

8、 scarce, he said. While the study offers clear evidence that climate change will affect temperature, acidity, and other factors, it is still speculation(推测) as to what the influence would be on biodiversity, for example, said Glover.1. What can we learn from what Andrew Sweetman said? A. Ocean condi

9、tions will get improved. B. The deep ocean affects human life hugely. C. Humans are to blame for the present ecosystems. D. The importance of the deep ocean isnt realised.2. What is Adrian Glovers attitude to the study? A. Disapproving. B. Objective. C. Useless. D. Perfect.3. Whats the main idea of

10、this passage? A. The deep ocean is important to humans. B. Food supplies at the deep seafloor are lacking. C. The deep ocean will become warmer and warmer. D. Warming and food shortage give deep-sea life a dark future.B More than one in 10 of the UKs wildlife species is threatened with extinction (灭

11、绝) and the number of the nations most endangered creatures has fallen by two-thirds since 1970. The abundance of all wildlife has also fallen, with one in six animals, birds, fish and plants having been lost, a State of Nature report found. Together with historical deforestation (毁林) and industriali

12、zation, these trends have left the UK among the most nature-exhausted countries in the world, with most of the country having gone past the stage at which ecosystems may no longer reliably meet societys needs. The comprehensive scientific report, gathered by more than 50 conservation organizations,

13、spells out the destructive impact of modern farming and climate change on habitats from farmland and hills to rivers and the coast. The fall in wildlife wasnt just all back in 70s and 80s, its still happening now, said Mark Eaton, at RSPB and the lead author of the report. Were getting more efficien

14、t in our farming. In a way its something to be celebrated how good our farming science and technology is, but it does squeeze nature out. Eaton said there were good examples of wildlife and habitat recovery, but such projects were too few to turn the tide, with public funding for natures diversity h

15、aving fallen by 32% from 2008 to 2015. The ability to do it is within our grasp; its just about resources and the willingness. The natural world is in serious trouble and it needs our help as never before. We continue to lose the precious wildlife that enriches our lives and is essential to the heal

16、th and well-being of those who live in the UK. But the State of Nature 2016 report gives us cause for hope too. Landscapes are being restored, special places defended, struggling species being saved and brought back. But we need to build significantly on this progress if were to provide a bright fut

17、ure for nature and for people. Overall, the new report found that 56% of species declined between 1970 and 2013, and 53% between 2002 and 2013. While the rest of the species were increasing, were seeing a lot of disorder, some species going up really fast and some going down equally fast. It doesnt

18、look like a healthy, natural situation. If that carries on, you end up with just 50% left.4. How is Paragraph 1 mainly developed? A. By listing figures. B. By giving examples. C. By analyzing causes. D. By making comparisons.5. What does the underlined part mean? A. Modern farming must return to nat

19、ure. B. Modern farming makes full use of nature. C. Modern farming can enrich natures diversity. D. Modern farming may disturb natures balance.6. What does the last but one paragraph mainly suggest? A. Endangered wildlife must be well protected. B. People should unite to fight for a bright future. C

20、. The situation is still severe despite some progress. D. More money is needed for environmental protection.7. What is the authors purpose in writing the passage? A. To tell the British how to save wildlife species. B. To explain why more wildlife species face extinction. C. To stress the importance

21、 of protecting wildlife species. D. To introduce the current situation of Britains wildlife species.完形填空 阅读下面的短文，从短文后各题所给的四个选项(A、B、C和D)中，选出可以填入空白处的最佳选项。 A marine biologist placed a shark into a large holding tank and then released several small bait fish into the tank. The result met your1, the shar

22、k quickly swam across the tank, attacked and ate the smaller fish. The biologist then2a strong piece of fiberglass into the tank, creating two3parts. She then put the shark on one side of the4fiberglass and a new set of bait fish on the other.5, the shark quickly attacked. But this time, the shark6b

23、ecause it knocked hard against the fiberglass7. Determined, the shark kept8this behavior every few minutes, but9. Meanwhile, the bait fish swam around10in the second part. Eventually, the shark11hope of hunting. This experiment was carried out several times. Each time, the shark got less12and made f

24、ewer attempts to attack the fish, until it13hitting the fiberglass and simply stopped attacking. The biologist then14the fiberglass, but the shark didnt attack. The shark was trained to believe a15existed between it and the bait fish,16the bait fish could swim wherever they wished, free from harm. M

25、any of us, after experiencing setbacks and failures,17give up and stop trying. Like the shark in the story, we believe that18we were unsuccessful in the past, we will always be unsuccessful.19, even when no real obstacle exists between where we are and where we want to go, we20see obstacles in our h

26、eads.1. A. demands B. expectations C. schedules D. requirements2. A. changed B. added C. inserted D. crashed3. A. separate B. opposite C. connected D. relevant4. A. delicate B. hidden C. transparent D. flexible5. A. Yet B. Meanwhile C. Instead D. Again6. A. bounced B. paused C. withdrew D. leapt7. A

27、. trapper B. catcher C. tester D. divider8. A. accomplishing B. repeating C. copying D. strengthening9. A. in order B. in vain C. in secret D. in pain10. A. unaccustomed B. unchallenged C. unharmed D. unnoticed11. A. divorced B. declined C. raised D. abandoned12. A. blind B. aggressive C. alert D. a

28、rbitrary13. A. got occupied with B. got involved in C. got tired of D. got used to14. A. readjusted B. restored C. replaced D. removed15. A. barrier B. distance C. gap D. distinction16. A.so B. but C. as D. for17. A. readily B. intentionally C. emotionally D. physically18. A. because B. though C. un

29、less D. while19. A. Above all B. In other words C. As a result D. In conclusion20. A. abruptly B. constantly C. eventually D. occasionally. 语法填空 阅读下面短文，在空白处填入1个适当的单词或括号内单词的正确形式。 Nowadays, more and more post-90s generation will enter the workforce. They place more emphasis1looking for a job that they

30、 enjoy more than other factors. Many of them hope to establish a2(relax) working relationship. More than half of them prefer the easy-going and good-tempered3(employ). Surprisingly 10 percent of them wish to be friends with their bosses. Experts say that they are the generation of the Internet era.

31、They have a strong4(aware) of self and how they relate to the outside world. Guo Yun, 22, is a digital media major from Beijing University of Posts and Telecommunications. She says that she would not mind5(work) long hours, but would prefer her boss6(explain ) why she has to, such as the urgency of the task. I feel7(great) motivated in this way, she explains. They tend to care a great deal about the team or the management culture.8are also more outspoken about their needs, and they are li