[考研类试卷]考研英语二(完形填空)模拟试卷15及答案与解析.doc
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1、考研英语二(完形填空)模拟试卷 15 及答案与解析一、Section I Use of EnglishDirections: Read the following text. Choose the best word(s) for each numbered blank and mark A, B, C or D. (10 points) 0 Now that we are fairly sure that there are many Earth-like planets in the Galaxy, the time is ripe (or almost so) to wonder whe
2、ther these new worlds do indeed have a high probability of hosting new forms of life.Currently, the best【C1】 _on the existence of other planets comes from NASAs【C2】_Kepler satellite, which has been mapping an area of the sky【C3】_some 150,000 stars.Scientists estimate that around 5 percent of planets
3、 in our galaxy have masses similar【C4】_Earths and, possibly, are within the habitable zone of their stars, meaning that【 C5】_they hold water it has a high chance of being liquid.【C6 】_there are about 200 billion stars in our galaxy alone, scientists estimate that there should be about 10 billion Ear
4、th-size planets. Not bad, especially if we【C7 】_that to be Earth-size and within a habitable zone is all it takes for life to take hold in an【C8】_world. In practice, however, the situation is much more【C9 】_, since it depends on what life is and how it appears in a planet,【C10】_on the planets detail
5、ed geological history.Here on Earth life appeared some 3.5 billion years ago.【C11】_that it may have been here as far【C12】_as 3.8 billion years ago remain tentative. For about the first three billion years, life on earth was【C13 】_in the form of single-cell creatures. Only when Earths atmosphere was
6、full of oxygen did more sophisticated organisms appear.【C14 】_its unusual atmosphere, Earths heavy, single moon, its magnetic field also did something else that allowed complex life to【 C15】_on its surface.【C16】_these, Complex life would find it very hard to【C17 】_and survive.The results from Kepler
7、s mission are encouraging and exciting. We have the【C18】_of confirming the existence of countless other worlds out there. Based on these findings, we should indeed【C19】_that other worlds would host some kind of simple life. However, as some scientists argued, Earth and its ability to host complex li
8、fe will probably remain a【C20】_phenomenon in this and other galaxies.1 【C1 】(A)data(B) lecture(C) comment(D)stress2 【C2 】(A)flexible(B) accessible(C) remarkable(D)renewable3 【C3 】(A)creating(B) comprising(C) uniting(D)merging4 【C4 】(A)as(B) to(C) with(D)like5 【C5 】(A)when(B) until(C) as(D)if6 【C6 】(
9、A)Provided(B) Hence(C) Since(D)Unless7 【C7 】(A)promise(B) demand(C) define(D)assume8 【C8 】(A)absurd(B) imaginary(C) invisible(D)alien9 【C9 】(A)subtle(B) cheerful(C) emotional(D)casual10 【C10 】(A)instead of(B) except that(C) as well as(D)in terms of11 【C11 】(A)Claims(B) Doctrines(C) Approaches(D)Orth
10、odoxies12 【C12 】(A)back(B) away(C) forward(D)down13 【C13 】(A)absolutely(B) mostly(C) eventually(D)directly14 【C14 】(A)In spite of(B) Other than(C) Apart from(D)Due to15 【C15 】(A)succeed(B) thrive(C) wander(D)assemble16 【C16 】(A)Behind(B) Along(C) Over(D)Without17 【C17 】(A)evolve(B) persist(C) degene
11、rate(D)ripen18 【C18 】(A)risk(B) liberty(C) privilege(D)objective19 【C19 】(A)suspect(B) pledge(C) celebrate(D)conclude20 【C20 】(A)rare(B) popular(C) natural(D)new20 For decades the market for expensive headphones was mainly limited to hi-fi fans. But【C1】_the boxy stereo system in the corner of the be
12、droom is largely a thing of the past, and young music fans listen【C2】_on portable devices, headphones have become as much of a fashion statement as the music player itself.【C3】_the first to spot the potential of this market was Dr Dre and Jimmy Iovine. In 2008 they【C4】_their Beats range of headphone
13、s, to great【C5】_. They have all but created a new product【C6】_: premium-priced headphones whose sound quality is good enough,【C7】_which mainly sell on their brand image.Beats Electronics and its founders have proved skilled【C8 】_using celebrity endorsements and product placement to【C9】_his headphone
14、s. In America the company now has almost half the market for premium-priced headphones, compared with 21% for Bose, a longer-established maker. Beats headphones are exactly what hip-hop fans want, but might not suit opera lovers. Overall,【 C10】_, they are a lot better than the earphones that come fr
15、ee with most portable devices.There is in any case a limit to how good music will sound through even the best headphones. Most of the music tracks on portable music players are in the form of mp3 audio files, in which the music has been【C11】_to make the files smaller and【C12】_fit more of them into a
16、【C13】_amount of storage capacity.Since consumers have been persuaded, largely by Beats, that it is worth paying a high price for headphones, perhaps they could be persuaded to turn their backs on cheap mp3s and【C14】_recordings in true high fidelity.If sales of hi-fi recordings take off it may【C15 】_
17、the market for really top-class headphones like those of Grado Labs, another American firm. Grado has for decades relied on reviews in specialist magazines, and word-of-mouth【C16 】_from fans, to spread news of its headphones【 C17】_reproduction. In contrast to Beats, it has avoided imagemaking it has
18、 not【C18】_since 1964 Unlike Dr Dre, then, its【 C19】_are less tied to the【C20】_tastes and fast-changing fashions of the young.21 【C1 】(A)now that(B) as long as(C) for fear that(D)except that22 【C2 】(A)extremely(B) even(C) mostly(D)only23 【C3 】(A)From(B) Before(C) Against(D)Among24 【C4 】(A)purchased(B
19、) launched(C) restored(D)discovered25 【C5 】(A)controversy(B) success(C) delight(D)trouble26 【C6 】(A)category(B) contract(C) service(D)partnership27 【C7 】(A)so(B) since(C) but(D)for28 【C8 】(A)on(B) to(C) over(D)at29 【C9 】(A)plug(B) output(C) maintain(D)dispose30 【C10 】(A)therefore(B) afterwards(C) th
20、ough(D)besides31 【C11 】(A)removed(B) compressed(C) separated(D)packaged32 【C12 】(A)soon(B) only(C) thus(D)still33 【C13 】(A)given(B) swollen(C) constrained(D)minimized34 【C14 】(A)work out(B) make out(C) seek out(D)turn out35 【C15 】(A)boost(B) dominate(C) destroy(D)shrink36 【C16 】(A)greetings(B) congr
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