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1、内蒙古巴彦淖尔市2017-2018学年高二英语上学期期中试题说明：本试题分第I卷（选择题）和第II卷（非选择题），考试时间为100分钟，卷面总分为120分，第1卷答案应涂在答题卡上，考试完毕后，只交第II卷和答题卡。第I卷（共 70 分）第1部 分： 阅读理解（共两节，满分40分）第一节 （共15小题；每小题2分，满分30分）阅读下列短文，从每题所给的A、B、C和D四个选项中，选出最佳答案。A When a leafy plant is under attack，it doesnt sit quietly. Back in 1983, two scientists, Jack Schultz
2、and Ian Baldwin, reported that young maple trees getting bitten by insects send out a particular smell that neighboring plants can get. These chemicals come from the injured parts of the plant and seem to be an alarm.What the plants pump through the air is a mixture of chemicals known as volatile or
3、ganic compounds, VOCs for short. Scientists have found that all kinds of plants give out VOCs when being attacked. Its a plants way of crying out. But is anyone listening? Apparently. Because we can watch the neighbours react. Some plants pump out smelly chemicals to keep insects away. But others do
4、 double duty .They pump out perfumes（芳香）designed to attract different insects who are natural enemies to the attackers. Once they arrive, the tables are turned. The attacker who was lunching now becomes lunch. In study after study, it appears that these chemical conversations help the neighbors. The
5、 damage is usually more serious on the first plant,but the neighbors, relatively speaking ,stay safer because they heard the alarm and knew what to do. Does this mean that plants talk to each other? Scientists dont know. Maybe the first plant just made a cry of pain or was sending a message to its o
6、wn branches, and so, in effect, was talking to itself. Perhaps the neighbors just happened to “overhear”(无意中听到) the cry. So information was exchanged, but it wasnt a true, intentional back and forth.Charles Darwin, over 150 years ago, imagined a world far busier, noisier and more intimate(亲密的) than
7、the world we can see and hear. Our senses are weak. Theres a whole lot going on.1. What does a plant do when it is under attack?A. It makes noises. B. It gets help from other plants.C. It stands quietly D. It sends out certain chemicals.2. What does the author mean by “the tables are turned” in para
8、graph 3?A. The attackers get attacked.B. The insects gather under the table.C. The plants get ready to fight back.D. The perfumes attract natural enemies.3.Scientists find from their studies that plants can .A.predict natural disasters B.protect themselves against insectsC.talk to one another intent
9、ionally D.help their neighbors when necessary4. What can we infer from the last paragraph?A.The word is changing faster than ever.B.People have stronger senses than beforeC.The world is more complex than it seemsD.People in Darwins time were more imaginative.B I am Peter Hodes, a volunteer stem cour
10、ier. Since March 2012, Ive done 89 trips of those , 51 have been abroad, I have 42 hours to carry stem cells（干细胞）in my little box because Ive got two ice packs and thats how long they last. In all, from the time the stem cells are harvested from a donor(捐献者) to the time they can be implanted in the
11、patient, weve got 72 hours at most. So I am always conscious of time.I had one trip last year where I was caught by a hurricane in America. I picked up the stem cells in Providence, Rhode Island, and was meant to fly to Washington then back to London. But when I arrived at the check-in desk at Provi
12、dence, the lady on the desk said: “Well, Im really sorry, Ive got some bad news for you- there are no fights from Washington.” So I took my box and put it on the desk and I said: “In this box are some stem cells that are urgently needed for a patient-please, please, youve got to get me back to the U
13、nited Kingdom.” She just dropped everything. She arranged for a flight on a small plane to be held for me. re-routed(改道) me through Newark and got me back to the UK even earlier than originally scheduled.For this courier job, youre consciously aware than that box youre got something that is potentia
14、lly going to save somebodys life.5. Which of the following can replace the underlined word “courier” in Para1?A. provider B. delivery man C. collector D. medical doctor6. Why does Peter have to complete his trip within 42 hours?A. He cannot stay away from his job too long. B. The donor can only wait
15、 for that long. C. The operation needs that very much. D. The ice wont last any longer. 7. Which flight did the woman put Peter on first?A. To London B. To Newark C. To Providence D. To WashingtonC Homestay provides English language students with the opportunity to speak English outside the classroo
16、m and the experience of being part of a British home.What to ExpectThe host will provide accommodation(住宿) and meals. Rooms will be cleaned and bedcovers changed at least once a week. You will be given the house key and the host is there to offer help and advice as well as to take an interest in your physical and mental
