2019湖南學(xué)位英語(yǔ)完型填空題22

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        Space is a dangerous place, not only because of meteors(流星) 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(紫外線的) penetrate the 6 __________.Cosmic(宇宙的) 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__________ called"rems(雷目)".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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