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2017年12月大学英语四级阅读理解试题及答案(4)
If the population of the earth goes on increasing at its present rate, there will eventually not be enough resources left to sustain life on the planet. By the middle of the 21st century, if present trends continue, we will have used up all the oil that drives our cars, for example. Even if scientists develop new ways of feeding the human race, the crowded conditions on earth will make it necessary for lus to look for open space somewhere else. But none of the other planets in our solar system are capable of supporting life at present. One possible solution to the problem, however, has recently been suggested by American scientist, Professor Carl Sagan.
Sagan believes that before the earth's resources are compleetely exhausted it will be possible to change the atmophere of Venus and so create a new world almost as large as earth itself. The difficult is that Venus is much hotter than the earth and there is only a tiny amount of water there.
Sagan proposes that algae organisms that can live in extremely hot or cold atmospheres and at the same time produce oxygen, should be bred in condition similar to those on Venus. As soon as this has been done, the algae will be placed in small rockets. Spaceship will then fly to Venus and fire the rockets into the atmosphere. In a fairly short time, the alge will break down the carbon dioxide into oxygen and carbon.
When the algae have done theri work, the atmosphere will become cooler, but befor man can set foot on Venus it will be neccessary for the oxygen to produce rain. The surface of the planet will still be too hot for man to land on it but the rain will eventually fall and in a few years something like earth will be reproduced on Venus.
1. Inte long run, the most insoluble problem caused by population growth on earth will probably be the lack of ________.
a. food
b. oil
c. space
d. resources
2. Carl Sagan believes that Venus might be colonized from earth because ________
a. it might be possible to change its atmosphere
b. its atmosphere is the same as the earth's
c. there is a good supply of water on Venus
d. the days on Venus are long enough 炎炎英文培训网
3. On Venus there is a lot of ________.
a. water
b. carbon dioxide
c. carbon monoxide
d. oxygen
4. Algae are plants that can ________.
a. live in very hot temperatures
b. live in very cold temperatures
c. manufacture oxygen
d. all of the above
5. Man can land on Venus only when ________.
a. the algae have done their work
b. the atmosphere becomes cooler
c. thereis oxygen
d. it rains there
参考答案:cabdd
英语四级选词填空 真题答案:
The things people make, and the way they makethem, determine how cities grow and decline,and influence how empires rise and fal.So, anydisruption to the world's factories matters.
And that disruption is surely coming.Factoriesare being digitised, filled with new sensors andnew computers to make them quicker, moreflexible, and more efficient.
Robots are breaking free from the cages that sur-round them, learning new skills, and new waysof working.And 3D printers have long promiseda world where you can make anything, any-where, from a computerised design.That visionis moving closer to reality.These forces will eadto cleaner factories, producing better goods atlower prices, personalised to our individualneeds and desires.Humans will be spared manyof the dirty, repetitive, and dangerous jobs thathave long been a feature of factory life.
Greater efficiency inevitably means fewer peoplecan do the same work.Yet factory bosses in many devel aped countries are worried about alack of ski led human workers-and see automa-tion and robots as a solution.
But economist Helena Leu rent says this period ofrapid change in manufacturing is a fantastic op-portunity to make the world a better
place.“Manufacturing is the one system whereyou have got the biggest source of innovation,the biggest source of economic growth, and thebiggest source of great jobs in the past.“Youcan see it changing.That'san opportunity toshape that system differently, and if we can, itwil have enormous sign fi cance.
26.K) matters
27.G) flexible
28.M) promised
29.L) moving
30.0) spared
31.F) feature
32.H) inevitably
33.A) automation
34.D) fantastic
35.N) shape
信息匹配:
36.[E] That comment ,say sMothering Justice director Dan-i elle Atkinson ,"wasmeanttoshame" po
37.[H] But the fact that 4in10Americanscan't come upwith$400inan emergency is a commonly cited statistic forgood reason : economic instability str er ches across race,gen-der,andgeography.
38.[M] According to the General Social Survey , 71 percent ofrespondents believe the country is spending too Little on"assistancetothepoor."
39.[J] The FrameWorks Institute ,aresearchgroupthatfo-c uses on public framing of issues , has studied what sustainsstereotypes and narratives of poverty in the United King-dom
40.[D] If these are the central characters of our story aboutpoverty , what layers of perceptions ,myths, and realities mustwe unearth to find meaningful solutions and support ?
41.[F] How many of us are poor in the U.S.?
42.[N] " Poverty has been interchangeable with people ofcolor-specificallyblackwomenand”blackmothers,"saysAtkinson of Mothering Justice .
43.[L] Negative images remain of whois living in poverty aswell as what is needed to moveoutofit.
44.[E] That comment ,say sMothering Justice director Dan-ielleAtkinson,"wasmeanttoshame”
45.[L] Those external factors include the difficulties accom-panyinglow-wage work or structural discrimination basedonrace,gender,orability.
仔细阅读:
P1
46.C They did not become popular until the emergenceof improved batteries .
47.BThefaling prices of e bike batteries .
48.DIt will profit from e bike sharing
49.A Retailers 'refusaltodealinebikes.
50.D The younger generation’s pursuit of comfortable riding
P2
51.A Tosway public opinion of the impact of human成activities on Earth
52.Cit covers more phenomena
53.D Deliberate choice of words o ass
54.B For greater precision .
55.C Human activities have serious effects on Earth
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