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英语四级考试完形填空的模拟练习题(37)

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英语四级考试完形填空的模拟练习题(37)

  Space is a dangerous place, not only because of meteors but also because of rays from the sun and other stars.The atmosphere again acts 1 our protective blanket on 2 .Light gets through, and this is essential 3 plants to make the food which we 4 .Heat, 5 , makes our environments tolerable and some ultraviolet rays penetrate the 6 .Cosmic rays of various kinds come 7 the air from outer space, but 8 quantities of radiation from the sun are screened off. 9 men leave the atmosphere they are 10 to this radiation; 11 their spacesuits or the walls of their spacecraft, if they are inside, 12 prevent a lot of radiation damage.Radiation is the greatest known danger to explorers in 13 .Doses of radiation are measured in 14 calledrems .We all 15 radiation here on earth from the sun, from cosmic rays and from radioactive minerals.The 16 dose of radiation that we receive each year is about two millirems; it 17 according toswheresyou live, and this is a very rough estimate.Scientists have reason to think 18 a man can 19 far more radiation 20 without being damaged; the figure of 60 rems has been agreed.

  1.A.for B.with C.on D.as

  2.A.stars B.sun C.earth D.space

  3.A.with B.from C.under D.for

  4.A.use B.live C.eat D.get

  5.A.again B.also C.besides D.too

  6.A.environment B.space C.atmosphere D.earth

  7.A.across B.to C.from D.through

  8.A.valid B.enormous C.various D.proper

  9.A.As soon as B.As well as C.As much as D.As possible as

  10.A.shown B.exposed C.faced D.covered

  11.A.but B.because C.so D.so that

  12.A.get B.make C.have D.do

  13.A.earth B.atmosphere C.space D.environment

  14.A.pieces B.units C.parts D.elements

  15.A.receive B.accept C.bring D.catch

  16.A.conventional B.commonC.general D.normal

  17.A.shifts B.converts C.modifies D.varies

  18.A.what B.which C.that D.why

  19.A.put up with B.keep up with C.come up with D.catch up with

  20.A.from B.than C.as D.away

  

  Space is a dangerous place, not only because of meteors but also because of rays from the sun and other stars.The atmosphere again acts 1 our protective blanket on 2 .Light gets through, and this is essential 3 plants to make the food which we 4 .Heat, 5 , makes our environments tolerable and some ultraviolet rays penetrate the 6 .Cosmic rays of various kinds come 7 the air from outer space, but 8 quantities of radiation from the sun are screened off. 9 men leave the atmosphere they are 10 to this radiation; 11 their spacesuits or the walls of their spacecraft, if they are inside, 12 prevent a lot of radiation damage.Radiation is the greatest known danger to explorers in 13 .Doses of radiation are measured in 14 calledrems .We all 15 radiation here on earth from the sun, from cosmic rays and from radioactive minerals.The 16 dose of radiation that we receive each year is about two millirems; it 17 according toswheresyou live, and this is a very rough estimate.Scientists have reason to think 18 a man can 19 far more radiation 20 without being damaged; the figure of 60 rems has been agreed.

  1.A.for B.with C.on D.as

  2.A.stars B.sun C.earth D.space

  3.A.with B.from C.under D.for

  4.A.use B.live C.eat D.get

  5.A.again B.also C.besides D.too

  6.A.environment B.space C.atmosphere D.earth

  7.A.across B.to C.from D.through

  8.A.valid B.enormous C.various D.proper

  9.A.As soon as B.As well as C.As much as D.As possible as

  10.A.shown B.exposed C.faced D.covered

  11.A.but B.because C.so D.so that

  12.A.get B.make C.have D.do

  13.A.earth B.atmosphere C.space D.environment

  14.A.pieces B.units C.parts D.elements

  15.A.receive B.accept C.bring D.catch

  16.A.conventional B.commonC.general D.normal

  17.A.shifts B.converts C.modifies D.varies

  18.A.what B.which C.that D.why

  19.A.put up with B.keep up with C.come up with D.catch up with

  20.A.from B.than C.as D.away

  

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