人教版选修七Unit 4 Sharing Using language课时作业(3).docx

unit 4 sharing using language课时作业第一节 完型填空a letter to.my brother, whom i bullied when we were young.i was five when you were born. looking at pictures from that time, i look so happy with you. i am holding you. i am smiling. i look1. but i do not remember that feeling.i was a daddys girl, but i was also the one to break in our parents. i used to call myself the familys guinea pig (豚鼠), 2 you were the happy one, the joker, the one who 3 the rewards of all my battles won or lost. so i must have decided that we were enemies, competitors for the love and attention of our parents, and this feeling is in the 4 of all my early memories. all i remember is 5 you.so, as long as i could, i made your life a6. i teased you, tricked you and 7 you. you tell me its not as bad as i remember, but i 8 a couple of times when you were left in tears. our little sister was born when i was 11, and very soon you two bonded 9 and pushed me aside. did you bond with her because i was becoming a monster, or did i become a monster because of your bond?thankfully, you quickly grew tall and strong, and soon you were able to overcome me10. from then on it was down to verbal abuse and psychological warfare. by the time i was at university, you were a teenager and we competed for higher 11: money, the family car, parental pride.it all came to a12 stop when i moved abroad as an exchange student. almost 20 years have passed, and the hate 13 me some long time ago, while i wasnt watching. and at the same time, 14 must have crept in (悄悄地进入), sneaking somewhere through the back of my mind.despite all the abuse during those years, you have turned into a happy, friendly, passionate, generous human being. you are the most handsome and charming person that i know. and, with your wife and best friend, you have just had your first child. nobody15 this happiness more. you have implied that youve forgiven me, or even that there is16 to forgive. but i17to remember the hurti will always hurt in18when i look back. all those wasted years in which i should have been your loving sister, standing by your side, defending instead of19you in your own home. i aim to be now what i always should have been.i am so20 of you; my heart wells up with love for you and your sister. i will be forever glad that i have the chance to love you both.your sister1.a.favouredb.frightened c.frustratedd.fascinated2.a.whileb.when c.though d.unless3.a.appreciatedb.reapedc.broughtd.cheated4.a.pointb.cost c.centred.end5.a.adoringb.hating c.assistingd.envying6.a.mysteryb.miseryc.mistaked.mixture7.a.absorbedb.abandonedc.abolishedd.abused8.a.devoteb.spend c.treasured.recall9.a.stronglyb.anxiouslyc.happilyd.unexpectedly10.a.temporarily b.spiritually c.physically d.academically11.a.requirementsb.resources c.positions d.purposes12.a.forced b.surprised c.controlled d.intended13.a.left b.accompaniedc.affected d.bothered14.a.hatredb.love c.guiltd.regret15.a.rejectsb.steals c.deservesd.ignores 16.a.nothing b.somethingc.anythingd.everything17.a.refuse b.planc.learn d.prefer 18.a.shame b.sorrowc.disappointmentd.confusion19.a.attacking b.attending c.attractingd.avoiding20.a.sure b.proud c.confident d.tired答案1.d2.a3.b4.c5.b6.b7.d8.d9.a10.c11.b12.a13.a14.b15.c16.a17.d18.a19.a20.b第二节 阅读理解btheir cheery song brightens many a winters day. but robins are in danger of wearing themselves out by singing too much. robins are singing all nightas well as during the day, british-based researchers say.david dominoni, of glasgow university, said that light from street lamps, takeaway signs and homes is affecting the birds biological clocks, leading to them being wide awake when they should be asleep.dr dominoni, who is putting cameras inside nesting boxes to track sleeping patterns, said lack of sleep could put the birds health at risk. his study shows that when robins are exposed to light at night in the lab, it leads to some genes being active at the wrong time of day. and the more birds are exposed to light, the more active they are at night. he told people at a conference, “there have been a couple of studies suggesting they are increasing their song output at night and during the day they are still singing. singing is a costly behaviour and it takes energy. so by increasing their song output, there might be some costs of energy. ”and it is not just robins that are being kept awake by artificial light. blackbirds and seagulls are also being more nocturnal. dr dominoni said, “in glasgow where i live, gulls are a serious problem. i have people coming to me sayingyou are the bird expert. can you help us kill these gulls?. during the breeding(繁殖)season, between april and june, they are very active at night and very noisy and people cant sleep. ”although dr dominoni has only studied light pollution, other research concluded that robins living in noisy cities have started to sing at night to make themselves heard over loud noise. however, some birds thrive(兴旺)in noisy environments. a study from california polytechnic university found more hummingbirds in areas with heavy industrial machinery. it is thought that they are capitalising on their predators(天敌)fleeing to quieter areas. 1. according to dr dominonis study, what causes robins to sing so much?a.the breeding season.b.the light in modern life.c.the dangerous environment.d.the noise from heavy machinery.2.what is the researchers concern over the increase of birds song output?a.the environment might be polluted.b.the birds health might be damaged.c.the industry cost might be increased.d.the peoples hearing might be affected.3.what does the underlined word“nocturnal”in paragraph 5 mean?a.active at night.b.inactive at night.c.active during the day.d.inactive during the day.4.why do some birds thrive in noisy environments?a.because there are fewer dangers.b.because there is more food to eat.c.because there is less light pollution.d.because there are more places to take shelter.答案1.b2.b3.a4.abno one is sure how the ancient egyptians built the pyramids near cairo. but a new study suggests they used a little rocknroll. long-ago builders could have attached wooden poles to the stones and rolled them across the sand, the scientists say. “technically, i think what theyre proposing is possible, ”physicist daniel bonn said. people have long puzzled over how the egyptians moved such huge rocks. and theres no obvious answer. on average, each of the two million big stones weighed about as much as a large pickup truck. the egyptians somehow moved the stone blocks to the pyramid site from about one kilometer away. the most popular view is that egyptian workers slid the blocks along smooth paths. many scientists suspect workers first would have put the blocks on sleds(滑板). then they would have dragged them along paths. to make the work easier, workers may have lubricated the paths either with wet clay or with the fat from cattle. bonn has now tested this idea by building small sleds and dragging heavy objects over sand. evidence from the sand supports this idea. researchers found small amounts of fat, as well as a large amount of stone and the remains of paths. however, physicist joseph west thinks there might have been a simpler way, who led the new study. west said, “i was inspired while watching a television program showing how sleds might have helped with pyramid construction. i thought, why dont they just try rolling the things?”a square could be turned into a rough sort of wheel by attaching wooden poles to its sides, he realized. that, he notes, should make a block of stone“a lot easier to roll than a square”. so he tried it. he and his students tied some poles to each of four sides of a 30-kilogram stone block. that action turned the block into somewhat a wheel. then they placed the block on the ground. they wrapped one end of a rope around the block and pulled. the researchers found they could easily roll the block along different kinds of paths. they calculated that rolling the block required about as much force as moving it along a slippery(滑的)path. west hasnt tested his idea on larger blocks, but he thinks rolling has clear advantages over sliding. at least, workers wouldnt have needed to carry cattle fat or water to smooth the paths. 5.its widely believed that the stone blocks were moved to the pyramid site by.a.rolling them on roadsb.pushing them over the sandc.sliding them on smooth pathsd.dragging them on some poles6.the un