2019英语同步人教选修六刷题首选卷(基础练+能力练):4.3 Word版含答案.docx
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1、试题为word版 下载可打印编辑Section Grammar对应学生用书P43基础题单句语法填空1It was not until he went abroad _ he realized how important his family is to him.答案:that2_ will be three days before he makes a decision.答案:It3_ took me great courage to tell the truth.答案:It4_was considerate of Michael to inform us of his delay in ca
2、se we got worried.答案:It5How was it _ your brother succeed in finishing the difficult task?答案:that6Is this the second time _ you have been to Guangzhou?答案:that7_ seems a pity to waste the food.答案:It8You can depend on _ that he can help you.答案:it9It was on the farm _ he spent his childhood _ he learne
3、d how to grow vegetables.答案:where; that10Is it in Beijing _ the 24th Winter Olympic Games will be held in 2022?答案:that单句改错1New technologies have made that possible to turn out new products faster and at a lower cost._答案:thatit2How long ago was that you last saw her?_答案:was后加it3This is a fact that th
4、ere is a generation gap between parents and children._答案:ThisIt4It was her being careless which resulted in the terrible accident._答案:whichthat5It is high time that we get started._答案:we后加should或getgot能力题 阅读理解A(2018福州市高三期末)A new study suggests that tiny organisms living underground may store most of
5、 the carbon in Swedish forest floors. Thats a good thing for the environment: If the carbon remains hidden in the soil, then its not escaping into the atmosphere. There, it could contribute to global warming.These organisms, called mycorrhizal fungi (菌根真菌), grow on tree roots. They provide trees wit
6、h nutrients in exchange for their sugars, which contain carbon.Scientists had long believed that most of the carbon sits above ground. But the new study suggests most carbon is trapped in the soil. Carbon is a building block of every living organism, from people and fish to bacteria and trees. Trees
7、 are masters at stashing carbon. They breathe in carbon dioxide from the air. They use the carbon to grow branches, leaves and roots. But the element moves around. If a tree falls down and rotsor is cut down and burnedits carbon goes back into the air as carbon dioxide. Too much of the gas in the ai
8、r can foster global warming.In cold northern forests, like those in Sweden, fallen leaves and branches take a long time to rot. That means the carbon in those materials can stay put for a long time.To learn more about what a tree does with its carbon, ecologists at the Swedish University collected s
9、oil from 30 forested Swedish islands. They then measured the amount and age of the carbon in the samples. The scientists found that deeper, fungifilled soils contained more carbon than soils from the surface of the forest floor.When the scientists dated the carbon in the samples, they got a surprise
10、: They found “young” carbon in deeper soils. The researchers had expected to find young carbon only in soils closer to the surface of the forest floor. The only explanation, they say: The young carbon came from the underground fungi that swallow carboncontaining sugars from tree roots.With the new f
11、indings, scientists may better understand soils role in storing carbon. That information could help improve forecasts for global warming.1How do fungi grow?AThey consume carbon dioxide.BThey digest fallen tree branches.CThey absorb nutrients from the soil.DThey obtain sugars from tree roots.答案:D细节理解
12、题。根据第二段内容可知,这种菌根真菌生长于树的根部,它们为树木提供营养,以换取树木中含有碳的糖。据此可知,这种菌根真菌吸收树根中的糖分,故D项正确。2What does the underlined word “stashing” in Paragraph 3 mean?AStoring. BReducing.CTransforming. DProducing.答案:A词义猜测题。根据第三段第四至五句“Trees are masters at stashing carbon. They breathe in carbon dioxide from the air.”可知,树木从空气中吸进二氧化
13、碳,所以树木是储藏碳的能手;据此可以判断,画线词意为“储存”,故A项正确。3Why were the scientists surprised at the findings?AYoung carbon was found in the surface of the forest floor.BThe findings could not be explained scientifically.CThe findings proved their previous ideas wrong.DIt is hard to find young carbon in the underground f
14、ungi.答案:C推理判断题。根据倒数第二段中的“They found young carbon in deeper soils. The researchers had expected to find young carbon only in soils closer to the surface of the forest floor.”可知,研究人员原以为新碳应存在于靠近地表的土壤中,但是研究发现,新碳却存在于深层土壤中,即发现的结果与他们先前的推论不一样,故他们感到惊讶,故C项正确。4Which of the following can be the best title for t
15、he text?AFungi in Cold Northern ForestsBFungi as Carbon KeepersCFungi on the Roots of TreesDFungi in the Deep Soil答案:B标题判断题。通读全文可知,本文是一篇科普说明文,菌根真菌能通过吸收树木的糖,从而将碳储藏在深层土壤中可知,这种菌根真菌是碳的保存者,故B项最能概括文意。 BAn accidental discovery has brought seismologists (地震学家) one step closer to being able to predict earthq
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