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1、2019-2020年高中英语Unit4ExploringplantsUsingLanguage课时跟踪训练新人教版.单词拼写1The developmental history of the society tells us that man has evolved (进化) from the ape.2Lets attach (系) labels to the luggage.3He bought a vase with a delicate (精致的) pattern of butterflies and leaves.4This is a typical (有代表性的) case in
2、my daily work.5The air in the garden was warm and fragrant (芬芳).单句改错1He attached his horse on a tree.onto2The machine gave up a steady buzzing.upout3This is the girl who name is Liu Hui.whowhose4He always passes by at the sight of blood.byout5That region has plenty of natural resources since this on
3、e has none.sincewhile.阅读理解Plants, like animals, are easy to be infected by diseases of various kinds.It has been estimated that some 30,000 different diseases attack our economic plants: forty are known to attack corn, and about as many attack wheat.The results of unchecked plant disease are all too
4、 obvious in countries which have only a limited number of food supplies.The problem will soon be more widespread as the population of the world increases at its frightening rate.Even in countries which are now amply fed by their agricultural products, there could soon be serious food shortages.It is
5、 easy to imagine the oute of some disastrous attack on one of the major crops; the resulting famines could kill millions of people, and the resulting hardship on other millions could cause political disturbance disastrous to the order of the world.Some plants are born with the ability to resist a gr
6、eat many diseases, while others are fairly easy to be infected.The tolerance (耐受性) of a particular plant changes as the growing conditions change.A blight (枯萎病) may be but a local infection which can be easily controlled; on the other hand, it can attack particular plants in a whole region or nation
7、.An example is the blight which killed actually every chestnut tree in North American.Another is the famous potato blight in Ireland in the last century.As a result of that, it was estimated that one million people died of starvation as potatoes were the main food for Irish people.Plant pathologists
8、 have made remarkable progress in identifying the pathogens (病原体) of the various diseases.Bacteria may invade a plant by way of insects carrying the pathogen.A plant can also be inoculated by man.Frequently a primary infection will weaken the plant so that a secondary infection may result from its l
9、ack of tolerance.The symptoms shown may cause an error in diagnosis, so that the treatment may be directed toward bacteria which could be the result of a susceptibility caused by a primary virus infection. 1.How many diseases are known to attack wheat?AAround 30,000.B40.CAround 29,960. DAround 40.解析
10、：选B细节理解题。由文章第一段第二句可知，危害谷类作物的疾病和危害小麦的数目一样多。故选B项。2Which of the following statements in NOT true?AA major crop disease, if not checked, would result in many deaths in a country.BA major crop disease, if not checked, would result in food shortages in rich countries.CA major crop disease, if not checked,
11、 would result in an increase of world population.DA major crop disease, if not checked, would result in political unrest.解析：选C细节理解题。根据第一段的叙述，A、B、D都可找到原文依据，C项没有列出。另外，根据常识，农作物疾病怎么能造成人口增加呢？我们也可看出C项为答案。3What is the main idea of the second paragraph?ASome plants can resist a great many diseases, while ot
12、hers have low immunity to them.BThe growing conditions have little impact on the tolerance of a particular plant.CIn most cases, blight develops in North America.DA blight once killed virtually every chestnut tree in North America.解析：选A主旨大意题。第二段中第一句话为主题句，其他为细节，用来详细解说该主题。4Which of the following state
13、ments is NOT true?ASymptoms are always misleading.BSome plant diseases may be caused by pathogens.CSome plant diseases may be indirectly caused by men.DA primary infection may lead to a secondary infection.解析：选B细节理解题。仔细阅读最后一段可知，该段第一句说科学家“在研究病原菌方面有很大进展”，但没有说明是否病原菌是疾病的根源。故选B项。BPilates, yoga and the ru
14、nning machine get all the attention when it es to popular ways to stay healthy. There is, however, a more humble exercise that might not be so attractive, but has all the benefits walking.Certified fitness professional Jolynn Jaekel explains, “What I love about walking is that anyone can do it at an
15、y age and any fitness level. Plus, it is good for your heart, your head and your wallet.”A recent report details the health benefits of walking. The report found that walking regularly to fulfill the 150 minutes of moderate physical exercise every week, remended by the UKs chief medical officer, cou
16、ld save 37,000 lives each year. Scientists at the Lawrence Berkeley National Laboratory in California found that quick walking reduces the risk of heart disease more effectively than running. They observed participants aged between 18 and 80 over a sixyear period and found that walking reduced the risk of heart disease by 9.3%, while running reduced
