理工類相同項^單選集考試卷模擬考試題_0

1、姓名：_ 班級：_ 學號：_-密-封 -線- 標簽:標題考試時間：120分鐘 考試總分：100分題號一二三四五總分分數(shù)遵守考場紀律，維護知識尊嚴，杜絕違紀行為，確?？荚嚱Y(jié)果公正。1、black holesmost scientists agree that black holes exist but are nearly impossible to locate. a black hole in the universe is not a solid object, like a planet, but it is shaped like a sphere (球體). astronomers

2、(天文學家) think that at the center of a black hole there is a single point in space with infinite(無限的)density(稠密), this single point is called a singularity (奇點). if the singularity theory is correct, it means that when a massive star collapses, all the material in it disappears into the singularity. t

3、he center of a black hole would not really be a hole at all, but an infinitely dense point. anything that crosses the black hole is pulled in by its great gravity.although black holes do exist, they are difficult to observe. these are the reasons. no light or anything else comes out of black holes.

4、as a result, they are invisible to a telescope. in astronomical terms, black holes are truly. for example, a black hole formed by the collapse of a giant star would have an event horizon(視界) only 18 miles across. the nearest black holes would be dozens of light years away from earth. one light year

5、is about 6 trillion (萬億) miles. even the most powerful telescopes could not pick out an object so small at such a great distance.in 1994 the hubble space telescope provided evidence that black holes exist. there are still answers to be found, however, so black holes remain one of the mysteries of th

6、e universe.black holes are part of space（ ）. （ ）a.rightb.wrongc.not mentioned2、black holesmost scientists agree that black holes exist but are nearly impossible to locate. a black hole in the universe is not a solid object, like a planet, but it is shaped like a sphere (球體). astronomers (天文學家) think

7、 that at the center of a black hole there is a single point in space with infinite(無限的)density(稠密), this single point is called a singularity (奇點). if the singularity theory is correct, it means that when a massive star collapses, all the material in it disappears into the singularity. the center of

8、 a black hole would not really be a hole at all, but an infinitely dense point. anything that crosses the black hole is pulled in by its great gravity.although black holes do exist, they are difficult to observe. these are the reasons. no light or anything else comes out of black holes. as a result,

9、 they are invisible to a telescope. in astronomical terms, black holes are truly. for example, a black hole formed by the collapse of a giant star would have an event horizon(視界) only 18 miles across. the nearest black holes would be dozens of light years away from earth. one light year is about 6 t

10、rillion (萬億) miles. even the most powerful telescopes could not pick out an object so small at such a great distance.in 1994 the hubble space telescope provided evidence that black holes exist. there are still answers to be found, however, so black holes remain one of the mysteries of the universe.b

11、lack holes exist but are difficult to observe（ ）. （ ）a.rightb.wrongc.not mentioned3、black holesmost scientists agree that black holes exist but are nearly impossible to locate. a black hole in the universe is not a solid object, like a planet, but it is shaped like a sphere (球體). astronomers (天文學家)

12、think that at the center of a black hole there is a single point in space with infinite(無限的)density(稠密), this single point is called a singularity (奇點). if the singularity theory is correct, it means that when a massive star collapses, all the material in it disappears into the singularity. the cent

13、er of a black hole would not really be a hole at all, but an infinitely dense point. anything that crosses the black hole is pulled in by its great gravity.although black holes do exist, they are difficult to observe. these are the reasons. no light or anything else comes out of black holes. as a re

14、sult, they are invisible to a telescope. in astronomical terms, black holes are truly. for example, a black hole formed by the collapse of a giant star would have an event horizon(視界) only 18 miles across. the nearest black holes would be dozens of light years away from earth. one light year is abou

15、t 6 trillion (萬億) miles. even the most powerful telescopes could not pick out an object so small at such a great distance.in 1994 the hubble space telescope provided evidence that black holes exist. there are still answers to be found, however, so black holes remain one of the mysteries of the unive

16、rse.the center of a black hole is empty.（ ）a.rightb.wrongc.not mentioned4、black holesmost scientists agree that black holes exist but are nearly impossible to locate. a black hole in the universe is not a solid object, like a planet, but it is shaped like a sphere (球體). astronomers (天文學家) think that

17、 at the center of a black hole there is a single point in space with infinite(無限的)density(稠密), this single point is called a singularity (奇點). if the singularity theory is correct, it means that when a massive star collapses, all the material in it disappears into the singularity. the center of a bl

18、ack hole would not really be a hole at all, but an infinitely dense point. anything that crosses the black hole is pulled in by its great gravity.although black holes do exist, they are difficult to observe. these are the reasons. no light or anything else comes out of black holes. as a result, they

19、 are invisible to a telescope. in astronomical terms, black holes are truly. for example, a black hole formed by the collapse of a giant star would have an event horizon(視界)lin 1994 the hubble space telescope provided evidence that black holes exist. there are still answers to be found, however, so

20、black holes remain one of the mysteries of the universe.the attraction of two large stars leads to gravity（ ）. （ ）a.rightb.wrongc.not mentioned5、black holesmost scientists agree that black holes exist but are nearly impossible to locate. a black hole in the universe is not a solid object, like a pla

21、net, but it is shaped like a sphere (球體). astronomers (天文學家) think that at the center of a black hole there is a single point in space with infinite(無限的)density(稠密), this single point is called a singularity (奇點). if the singularity theory is correct, it means that when a massive star collapses, all

22、 the material in it disappears into the singularity. the center of a black hole would not really be a hole at all, but an infinitely dense point. anything that crosses the black hole is pulled in by its great gravity.although black holes do exist, they are difficult to observe. these are the reasons

23、. no light or anything else comes out of black holes. as a result, they are invisible to a telescope. in astronomical terms, black holes are truly. for example, a black hole formed by the collapse of a giant star would have an event horizon(視界) only 18 miles across. the nearest black holes would be

24、dozens of light years away from earth. one light year is about 6 trillion (萬億) miles. even the most powerful telescopes could not pick out an object so small at such a great distance.in 1994 the hubble space telescope provided evidence that black holes exist. there are still answers to be found, how

25、ever, so black holes remain one of the mysteries of the universe.the sun is the heaviest star in the universe.（ ）a.rightb.wrongc.not mentioned6、black holesmost scientists agree that black holes exist but are nearly impossible to locate. a black hole in the universe is not a solid object, like a plan

26、et, but it is shaped like a sphere (球體). astronomers (天文學家) think that at the center of a black hole there is a single point in space with infinite(無限的)density(稠密), this single point is called a singularity (奇點). if the singularity theory is correct, it means that when a massive star collapses, all

27、the material in it disappears into the singularity. the center of a black hole would not really be a hole at all, but an infinitely dense point. anything that crosses the black hole is pulled in by its great gravity.although black holes do exist, they are difficult to observe. these are the reasons.

28、 no light or anything else comes out of black holes. as a result, they are invisible to a telescope. in astronomical terms, black holes are truly. for example, a black hole formed by the collapse of a giant star would have an event horizon(視界) only 18 miles across. the nearest black holes would be d

29、ozens of light years away from earth. one light year is about 6 trillion (萬億) miles. even the most powerful telescopes could not pick out an object so small at such a great distance.in 1994 the hubble space telescope provided evidence that black holes exist. there are still answers to be found, howe

30、ver, so black holes remain one of the mysteries of the universe.the nearest black holes are hundreds of light years away from us（ ）. （ ）a.rightb.wrongc.not mentioned7、black holesmost scientists agree that black holes exist but are nearly impossible to locate. a black hole in the universe is not a so

31、lid object, like a planet, but it is shaped like a sphere (球體). astronomers (天文學家) think that at the center of a black hole there is a single point in space with infinite(無限的)density(稠密), this single point is called a singularity (奇點). if the singularity theory is correct, it means that when a massive star collapses, all the material in it disappears into the singularity. the c