理工类相同项单选集考试卷模拟考试_题_2

1、姓名：_ 班级：_ 学号：_-密-封 -线- 理工类相同项单选集考试卷模拟考试_题考试时间：120分钟 考试总分：100分题号一二三四五总分分数遵守考场纪律，维护知识尊严，杜绝违纪行为，确保考试结果公正。1、radiation effectspace 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 as our protective blanket on earth ligh

2、t, gets through, and this is essential for plants to make the food that we eat. heat, too, makes our environment endurable. various kinds of rays come through the air from outer space, but enormous quantities of radiation from the sun are screened off. as soon as men leave the atmosphere they are ex

3、posed to this radiation, but their spacesuits or the walls of their spacecrafts, if they are inside, do prevent a lot of radiation damage.radiation is the greatest known danger to explorers in space. the unit of radiation is called “rem” (“雷姆”). scientists have reason to think that a man can put up

4、with far more radiation than 0.1 rem without being damaged, the figure of 60 reins has been agreed on. the trouble is that it is extremely difficult to be sure about radiation damage-a person may feel perfectly well, but the cells of his or her sex organs may be damaged ,and this will not be discove

5、red until the birth of deformed(畸形的)children or even grandchildren. missions of the apollo flights have had to cross belts of high radiation and, during the outward and return journeys, the apollo crew accumulated a larger amount of reins. so far, no dangerous amounts of radiation have been reported

6、, but the apollo missions have been quite short. we simply do not know yet how men are going to get on when they spend weeks and months outside the protection of the atmosphere, working in a space laboratory. drugs might help to decrease the damage clone by radiation ,but no really effective ones ha

7、ve been found so far.according to the first paragraph, the atmosphere is essential to man in that_。 （ ）a.it protects him against the harmful rays from spaceb.it provides sufficient light for plant growthc.it supplies the heat necessary for human survivald.it screens off the falling meteors2、radiatio

8、n effectspace 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 as our protective blanket on earth light, gets through, and this is essential for plants to make the food that we eat. heat, too, makes our environment

9、 endurable. various kinds of rays come through the air from outer space, but enormous quantities of radiation from the sun are screened off. as soon as men leave the atmosphere they are exposed to this radiation, but their spacesuits or the walls of their spacecrafts, if they are inside, do prevent

10、a lot of radiation damage.radiation is the greatest known danger to explorers in space. the unit of radiation is called “rem” (“雷姆”). scientists have reason to think that a man can put up with far more radiation than 0.1 rem without being damaged, the figure of 60 reins has been agreed on. the troub

11、le is that it is extremely difficult to be sure about radiation damage-a person may feel perfectly well, but the cells of his or her sex organs may be damaged ,and this will not be discovered until the birth of deformed(畸形的)children or even grandchildren. missions of the apollo flights have had to c

12、ross belts of high radiation and, during the outward and return journeys, the apollo crew accumulated a larger amount of reins. so far, no dangerous amounts of radiation have been reported, but the apollo missions have been quite short. we simply do not know yet how men are going to get on when they

13、 spend weeks and months outside the protection of the atmosphere, working in a space laboratory. drugs might help to decrease the damage clone by radiation ,but no really effective ones have been found so far.we know from the passage that_. （ ）a.exposure to even tiny amounts of radiation is fatalb.t

14、he effect of exposure to radiation is slow in comingc.radiation is avoidable in space explorationd.astronauts in spacesuits neednt worry about radiation damage3、radiation effectspace is a dangerous place, not only because of meteors (流星)but also because of rays from the sun and other stars. the atmo

15、sphere again acts as our protective blanket on earth light, gets through, and this is essential for plants to make the food that we eat. heat, too, makes our environment endurable. various kinds of rays come through the air from outer space, but enormous quantities of radiation from the sun are scre

16、ened off. as soon as men leave the atmosphere they are exposed to this radiation, but their spacesuits or the walls of their spacecrafts, if they are inside, do prevent a lot of radiation damage.radiation is the greatest known danger to explorers in space. the unit of radiation is called “rem” (“雷姆”

17、). scientists have reason to think that a man can put up with far more radiation than 0.1 rem without being damaged, the figure of 60 reins has been agreed on. the trouble is that it is extremely difficult to be sure about radiation damage-a person may feel perfectly well, but the cells of his or he

18、r sex organs may be damaged ,and this will not be discovered until the birth of deformed(畸形的)children or even grandchildren. missions of the apollo flights have had to cross belts of high radiation and, during the outward and return journeys, the apollo crew accumulated a larger amount of reins. so

19、far, no dangerous amounts of radiation have been reported, but the apollo missions have been quite short. we simply do not know yet how men are going to get on when they spend weeks and months outside the protection of the atmosphere, working in a space laboratory. drugs might help to decrease the d

20、amage clone by radiation ,but no really effective ones have been found so far.the harm radiation has done to the apollo crew members_. （ ）a.is insignificantb.seems overestimatedc.is enormousd.remains unknown4、radiation effectspace is a dangerous place, not only because of meteors (流星)but also becaus

21、e of rays from the sun and other stars. the atmosphere again acts as our protective blanket on earth light, gets through, and this is essential for plants to make the food that we eat. heat, too, makes our environment endurable. various kinds of rays come through the air from outer space, but enormo

22、us quantities of radiation from the sun are screened off. as soon as men leave the atmosphere they are exposed to this radiation, but their spacesuits or the walls of their spacecrafts, if they are inside, do prevent a lot of radiation damage.radiation is the greatest known danger to explorers in sp

23、ace. the unit of radiation is called “rem” (“雷姆”). scientists have reason to think that a man can put up with far more radiation than 0.1 rem without being damaged, the figure of 60 reins has been agreed on. the trouble is that it is extremely difficult to be sure about radiation damage-a person may

24、 feel perfectly well, but the cells of his or her sex organs may be damaged ,and this will not be discovered until the birth of deformed(畸形的)children or even grandchildren. missions of the apollo flights have had to cross belts of high radiation and, during the outward and return journeys, the apoll

25、o crew accumulated a larger amount of reins. so far, no dangerous amounts of radiation have been reported, but the apollo missions have been quite short. we simply do not know yet how men are going to get on when they spend weeks and months outside the protection of the atmosphere, working in a spac

26、e laboratory. drugs might help to decrease the damage clone by radiation ,but no really effective ones have been found so far.it can be inferred from the passage that_. （ ）a.the apollo mission was very successfulb.protection from space radiation is no easy jobc.astronauts will have deformed children

27、 or grandchildrend.radiation is not a threat to well-protected space explorers5、radiation effectspace 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 as our protective blanket on earth light, gets through, and thi

28、s is essential for plants to make the food that we eat. heat, too, makes our environment endurable. various kinds of rays come through the air from outer space, but enormous quantities of radiation from the sun are screened off. as soon as men leave the atmosphere they are exposed to this radiation,

29、 but their spacesuits or the walls of their spacecrafts, if they are inside, do prevent a lot of radiation damage.radiation is the greatest known danger to explorers in space. the unit of radiation is called “rem” (“雷姆”). scientists have reason to think that a man can put up with far more radiation than 0.1 rem without being damaged, the figure of 60 reins has been agreed on. the trouble is that it is extre