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課時訓(xùn)練(十八) (限時:25分鐘) Ⅰ.單項填空 1.—Peter, the bike looks cool.Is it 　　　　? —Yes.My mother bought it for my birthday. A.his B.yours C.hers D.ours 2.More and more young people like skiing 　　　　winter. A.in B.on C.at D.to 3.Dont look around when crossing the street, 　　　　you will be in danger. A.so B.but C.or D.and 4.—Mum, must I leave home at once? —No, you 　　　　. A.cant B.neednt C.shouldnt D.wouldnt 5.—　　　　 do you visit your grandparents, Tony? —Oh, once a month.My grandparents live in Tianjin. A.How long B.How far C.How often D.How many 6.—Which subject do you like 　　　　, math or Chinese? —Chinese. A.good B.better C.best D.the best 7.While I 　　　　the house yesterday, I found an old photo of my grandparents. A.cleaned B.was cleaning C.clean D.am cleaning 8.Li Xin 　　　　English for more than ten years and she is quite good at it now. A.learns B.was learning C.learned D.has learned 9.Jeff and his father 　　　　an NBA game tomorrow. A.watch B.watched C.were watching D.are going to watch 10.My brother　　　　 a song in the school show last week. A.sings B.will sing C.sang D.has sung 11.The 2022 Winter Olympics 　　　　in Beijing and towns in Hebei Province. A.are held B.will be held C.hold D.will hold 12.—Philip has gone to New Zealand. —Oh, can you tell me　　　　? A.when did he leave B.when he is leaving C.when he left D.when is he leaving Ⅱ.[xx海淀二模] 閱讀理解 Lyme Disease—A Medical Mystery In the autumn of 1975, lots of people in Lyme, Connecticut, suffered from a strange illness.Two doctors from Yale, Allan Steere and Stephen Malawista, began a study that would result in an important medical discovery. The doctors began by having careful examinations of each patient.They found the patients of all ages were having a set of things hardly seen together, such as headaches, skin rashes(皮疹), swollen knees, fever, tiredness and so on.There was also a high rate of arthritis(關(guān)節(jié)炎), a painful condition around the knees.No reasons could be found through blood tests.However, they found the most useful information in the interviews with the patients: one quarter of them recalled a skin rash about four weeks before the arthritis appeared. Then the Department of Health did surveys with the Yale doctors to learn where the disease was most widely seen.It seemed that most patients lived in heavily wooded areas, away from the center of town.Besides, most patients spent a good deal of time outdoors, gardening, camping, or playing.More importantly, some recalled having been bitten by a tick. By 1977, researchers began to believe that the deer tick was responsible.Then they discovered that a special type of bacteria(細菌), carried by the deer tick, was causing the disease.It was later named Lyme bacteria.The deer tick often feeds on deer.But we can also find it on mice.Scientists then concluded that the bacteria passed from wildlife to ticks to humans.All lived closely among one another in the area. How could a disease break out so suddenly? Many areas of the northeast, including Lyme, Connecticut, were once farmland.Over the years, the farmland was replanted with trees.After the forest grew in, all kinds of wildlife appeared.At the same time, this area was developed with houses.Gradually, neighborhoods pushed deeper into the home of the wildlife.Humans became more likely to meet more ticks and get the disease. After much research, the cause of Lyme disease was successfully identified(確認), thanks to the hard work of many scientists, doctors and patients.Today, more and more people have knowledge of Lyme disease, which is easily treated if caught early. 13.Which helped Dr.Steere and Dr.Malawista most? A.Having interviews with the patients. B.Examining the patients carefully. C.Separating the patients into age groups. D.Doing blood tests among the patients. 14.Which of the following is TRUE about Lyme disease? A.Little is known about Lyme disease today. B.Most of the patients lived in the center of town. C.More trees could keep people away from the disease. D.Wildlife spread the bacteria to ticks and then to humans. 15.What is the writers main purpose in writing this passage? A.To describe how Lyme disease was treated. B.To warn people not to go outdoors in the forest. C.To introduce how the cause of Lyme disease was found. D.To criticize the people who spread Lyme disease around. Ⅲ.閱讀短文,根據(jù)短文回答問題 Keep Air Clean in Your Home Have you ever got a bad cough that wont go away? Do you have trouble breathing? Do your eyes hurt when your parents are cooking? The air in your home could cause these problems. Everyone knows that there is air pollution in the street, but it is surprising to discover that you are also in danger of air pollution in your own home. Many people, especially those who live in villages in the countryside, burn coal or wood in the open air. This can be really dangerous, because there are harmful chemicals in the smoke and they can seriously pollute the air in your home. Fuels(燃料) that people use for cooking can also be harmful. Again, the problem is often that fresh air doesnt get into the area where the cooking takes place. When you breathe in bad air in your home, it can harm your lungs(肺部) and other parts of your body. There are things you can do to reduce the amount(數(shù)量) of bad air in your home. Of course, you have to keep warm and you cant stop cooking, but you can reduce the amount of bad air you breathe in. First of all, avoid smoky areas as much as you can. Although its important for adults to stay away from smoke, its especially important for children. Secondly, find some ways to fix the problem if an open fire or cooking causes smoke in your home. To remove(除去) the smoke, you can turn on the smoke lampblack machine(油煙機) and open the window more often, even in winter. Youll be glad you did it! 16.Is there air pollution in your own home? 17.Why is it dangerous to burn coal or wood in the open air? 18.What can it harm when you breathe in bad air? 19.What can you do to remove the smoke? 20.What is the passage mainly about?  參考答案 Ⅰ.1—6　BACBCB　7—12　BDDCBC Ⅱ.[主旨大意] 1975年在萊姆很多人感染了一種奇怪的疾病,來自耶魯?shù)膬蓚€醫(yī)生經(jīng)過研究發(fā)現(xiàn)了一種奇怪的細菌,攜帶者是鹿虱,在這之后這種細菌被命名為萊姆細菌,這種細菌導(dǎo)致了萊姆地區(qū)很多人感染這種疾病。 13.A　根據(jù)第二段中“However, they found the most useful information in the interviews with the patients”可知 A正確。 14.D　根據(jù)第四段中“Scientists then concluded that the bacteria passed from wildlife to ticks to humans.”可知,萊姆疾病的傳播是從野生動植物到虱子再到人類。故選D。 15.C　通讀全文可知作者的目的是介紹萊姆疾病的起因是怎樣被發(fā)現(xiàn)的。故選C。 Ⅲ.16.Yes, there is. 17.Because there are harmful chemicals in the smoke and they can seriously pollute the air in our home. 18.It can harm our lungs and other parts of our bodies. 19.We can turn on the smoke lampblack machine and open the window more often. 20.The air pollution in our home and the ways to keep air clean in our home.