1、选修七 unit 3 学案一.单项填空(建议用时9)1Many people_the opening ceremony of 2010 World Expo，which was so splendid.Awitnessed BparticipatedCswallowed Dhandled2If you turn your bag_，the books will fall out.Aback to front Bup and downCupside down Dback and forth3Human flesh search is supposed to be_due to lots of b
2、ad influences.Areplaced BabandonedCaccused Dequipped4I thought the medicine would make him sleep，but it had the _ effect.Abetter BpracticalCopposite Dbasic5Whenever she heard that someone had trouble，she would go to _.Afind out Bwork outCcarry out Dhelp out6The WHO urged that all the countries _ mea
3、sures to prevent H1N1 spreading.Atake Bmust takeCare to take Dtook7Premier Wens strong love for the people is_in what he has done and spoken. Arelieved BreflectedCresponded Drecovered8His debt was _ the whole family_.Adragging；down Bdrawing；downCpulling；down Ddragged；down9The fans gave a (n)_descrip
4、tion of the first match of the World Cup as if they were footballers.Acreative BfantasticCimaginative Dvivid10People have planted a great many trees in order to _ wind and sand in the desert.Ahold down Bhold upChold back Dhold out11The study showed a deep fear among the old people of _ to the care o
5、f strangers.Aabandoned Bto be abandonedCbeing abandoned Dabandoning12I was _ them about my travels _she broke in with a story of her own on her visit to Hainan.Ato tell；while Babout to tell；whenCwas going to；while Dtelling；while13He was quite_of how dangerous the whole situation was，but he had no ch
6、oice but to take a risk.Aaccurate BashamedCaccustomed Daware14Li Ming was so _of the snake that he began to cry the moment he saw it.Aproud Bscared Ctired Dguilty15His fatal mistake has become the_，for it cost the chance to reach the last 16 in the World Cup.Aexample Bhandle Cface Dtarget.阅读理解 A 词数
7、285 难度系数 建议用时 7Traditionally，incineration(焚化)or landfill sites have been used for removing waste，but as the methods are used up and the quantity of rubbish grows，increasing amounts of waste are being dumped(倾倒)in rivers and in the oceans.Recent photographs taken of The Citarum River in West Java，Ind
8、onesia illustrate the size of the problem.The Citarum River is turning into one of the biggest floating rubbish dumps on the planet，but it is by no means the only problem area.In February 2009，reports from the press started to describe a similar but vaster area of plastic pieces and other garbage dr
9、ifting in the northern Pacific Ocean，held there by circling ocean currents.Originally discovered in 1997，what is also called the Great Pacific Garbage Patch is now alarming ecologists with its evergrowing size and possible effect on human health.What has exacerbated the problem is that much of the r
10、ubbish comes from plastics which are not biodegradable(可生物分解的)Plastics are used in packaging，bottles，toothbrushes，disposable lighters，netting and a thousand and one other items.Unlike organic rubbish，plastics will be around for a long time.According to Charles Moore，a marine biologist，some plastics
11、have the ability to absorb and concentrate poisonous chemicals and certain animals such as jellyfish have the ability to digest such plastic material.“Through fish，the poisons pass into the food web that leads，in some cases，to human beings，”says Charles Moore.Moore，who studies the effects of marine
12、garbage on our oceans，believes that floating garbage is creating a real threat to the worlds ecology and the environment.In the meantime，marine floating garbage is posing a real threat to wildlife.For example，much publicity has already been made about the bad situation of the Albatross(信天翁)communiti
13、es that live on the Midway Atoll，an island located in the North Pacific Ocean.1According to the first paragraph，the problem of rubbish_.Adidnt exist in the pastBis becoming more seriousCcan be solved in many waysDhas challenged human survival2The underlined word “exacerbated” in Paragraph 3 can be r
14、eplaced by “_”Ainvolved BcoveredCcaused Dworsened3In Moores opinion，the poisonstoring plastics_.Acan cause harm to human healthBare deadly to fish in the oceansCresulted in bad changes in human healthDhave destroyed the global ecological system4What is most likely to be discussed in the paragraph th
15、at follows?AMore problems with wildlife.BHow garbage at sea affects Albatrosses.CWhat we should do to protect wildlife.DMore information about the worlds ecology.B 词数 330 难度系数 建议用时 8Male cichlids are mainly freshwater fish that may go after other fish that dare to cross their path.A male cichlid wil
16、l even lunge if that “other fish” happens to be himself：When male cichlids see their own reflections in a mirror，they respond as aggressively as when they encounter a real fish opponent.A new study suggests that even though these two situations may look the same，a fishs brain actually reacts differe
17、ntly in each case.That doesnt mean，however，that the fish recognizes itself.Researchers from Stanford University recently studied male cichlids that fight their own reflections.The team observed that the part of the brain associated with fear and other negative emotions becomes active when the fish f
18、ight their mirror images.According to Julie KDesjardins，one of the scientists who worked on the study，the scientists are not sure that cichlids are afraid of themselves.Even if its not fear，they are having a negative response，she told Science News.The researchers did not observe a difference in the
19、behaviors of fish going after other fish compared with fish going after their own reflections.However，when they looked in the fishs brain，using a technique called immediate early gene (IEG)，they found a difference.With this technique，the scientists watched particular genes in the cichlids that were
20、associated with particular regions of the brain.Measuring IEG helped the scientists to determine which areas of the brain were more active than others.A male cichlid went after its own reflection，the scientists found that the fish brain was especially active in a region similar to the amygdala while
21、 it went after other fish，it didnt have the same activity in its amygdala region.In human beings and other animals，the amygdala is associated with fear and other negative emotions.Using IEG to study fishs fear is new and unusual, and some older studies have shown similar results in other animals. Mo
22、nkeys，for example，have not been shown to recognize themselvesbut they do act differently around their own reflections than they do around other monkeys.5In the first paragraph，the underlined word “lunge” is closest in meaning to _.Aattack BhideCrelax Descape6According to the passage, male cichlids r
23、eflections in a mirror cause _.Aother fish to fight Bthem to fight other fishCthem to recognize themselvesDtheir brain activity connected with fear or other negative emotions7From the second paragraph, we can learn that _.Acichlids fight their reflections in the mirror，because they have recognized t
24、hemselves as the opponentsB. it isnt confirmed that cichlids fight their mirror images because they are afraid of the imagesC. the scientist Julie thought when cichlids saw their mirror images, their positive emotions became activeD. cichlids have the same brain activity in two cases where they see
25、their mirror images and see other fish8Which of the following is TRUE about IEG according to the passage?AIts a skill detecting the brain activity of fish.BScientists use it to find the species of fish.CIts a method especially used to study the behaviors of fish.DIt helps scientists to observe how f
26、ish fight their opponents.9The passage is mainly about _.Athe study about why cichlids fight their own reflectionsBthe application of the IEG techniqueCthe research about the brain activities of cichlids and other animalsDthe exploration about whether cichlids can recognize themselves in the mirror.w。w-w*k&s%5￥u高考资源网w。w-w*k&s%5￥u
