Unit 22 Environmental Protection Section .单句语法填空1We substituted fish _ meat several times a week.2Some people advocated _(limit) the number of cars on the main road.3It is time to take action _(let) our customers understand this.4. But for the meeting, I would _(go) home at the time.5He was condemned to _(die) for murder and later hanged.6Please go back to your classroom _ turn.7We train them to make use of _(refer) books.8I look forward to _(come) to work every day.9There _(be) a number of Negroes in the city.10I cant go out with all these clothes _(wash)【答案】1.for2.limiting3.to let4.have gone5death6.in7.reference8.coming9.are10to wash.单句改错1. He sat there with his eyes close._2. Giving that he was still a boy, I forgave him._3The number of fish in coastal waters have decreased._4I was trapped into tell the police all I knew._5Their devotion to their children was beyond word._6The person refer to is my English teacher._7We looked after the little boy by turn._8Tom was condemned with life imprisonment._9Margarine is often used as a substitute with butter._10The report advocated that all buildings was fitted with smoke detectors._【答案】1.close改为closed2.Giving改为Given3have改为has4.tell改为telling5.word改为words6.refer改为referred7.by改为in或turn改为turns8.with改为to9.with改为for10was改为be.阅读理解Plants are flowering faster than scientists predicted(预测) in reaction to climate change，which could have long damaging effects on food chains and ecosystems.Global warming is having a great effect on hundreds of plant and animal species around the world，changing some living patterns，scientists say.Increased carbon dioxide(CO2 )in the air from burning coal and oil can have an effect on how plants produce oxygen，while higher temperatures and changeable rainfall patterns can change their patterns of growth.“Predicting species reaction to climate change is a major challenge in ecology，” said the researchers of several US. universities.They said plants had been the key object of study because their reaction to climate change could have an effect on food chains and ecosystem services.The study，published on the Nature website，uses the findings from plant life cycle studies and experiments across four continents and 1,634 species.It found that some experiments had underestimated(低估)the speed of flowering by 8.5 times and leafing by 4 times.“Across all species，the experiments underpredicted the speed of the advancefor both leafing and floweringthat results from temperature increases，”the study said.The design of future experiments may need to be improved to better predict how plants will react to climate change，it said.Plants are necessary for life on the Earth.They are the base of the food chain，using photosynthesis (光合作用) to produce sugar from carbon dioxide and water.They let out oxygen which is needed by nearly every organism on the planet.Scientists believe the worlds average temperature has risen by about 0.8 since 1900，and nearly 0.2 every ten years since 1979.So far，efforts to cut emissions(排放) of planetwarming greenhouse gases are not seen as enough to prevent the Earth heating up beyond 2 this centurya point scientists say will bring the danger of a changeable climate in which weather extremes are common，leading to drought，floods，crop failures and rising sea levels.【语篇解读】本文为说明文，题材为科普知识类。温室效应已经影响了植物的生长类型，由于植物在食物链和生态系统中有着重要影响，科学家们正致力于研究其生长变化。1What is the key information the author wants to give in Paragraph 1?APlants reaction to weather could have damaging effects on ecosystems.BThe increasing speed of flowering is beyond scientists expectation.CClimate change leads to the change of food production patterns.DFood chains have been seriously damaged because of weather.【解析】主旨大意题。根据第一段“Plants are flowering faster than scientists predicted(预测) in reaction to climate change.”可知本题应选择B项。【答案】B2We can learn from the study published on the Nature website that_.Aplants flowering is 8.5 times faster than leafingBthere are 1,634 plant species on the four continentsCscientists should improve the design of the experimentsDthe experiments failed to predict how plants