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The sun is a star. It is a flaming ball of extremely    1    gases. The surface temperature is about 11,000 F., hot enough to turn every    2    to vapor (氣體), but relatively cool compared to the strong heat at the    3   .

    Located about 93 million miles    4    the earth, the sun has a diameter (直徑) that is nearly equal to 109 of our ear ths    5    up like a row of beach balls, and a mass that is about 330 000 times the mass of the earth.

    The sun is the original source of nearly all our    6   . It is mostly made of hydrogen (), 7    it also contains nearly every other kind of atom (原子 )that exists on the earth. The sun obtains its energy from a process of fusion (溶解) in which hydrogen atoms are changed into helium () atoms    8    extreme heat and pressure. This process creates a great noise, but we cannot hear it because    9    does not travel through empty space.

    Our sun is not even    10    large or bright compared to    11    stars. Stars vary in size from smaller than the earth to large enough to hold a good part of our solar system (太陽系)! The    12    of a star shows its temperature. A star may be red, yellow, white, or blue.

    The nearest star is 4.3 light years from the earth. A light year is the    13    light travels in one year, or about    6    million miles. The    14    stars are billions of light years away. Some are    15    far away that if they were to blow up today, their light would continue to be seen from the earth    16    a million years! Our sun is part of a great galaxy (星系) of    30  billion stars called the Milky Way.    17  , there are billions of galaxies within    18    of our telescopes and countless billions beyond. The bigness of space quite __19  human comprehension. How exciting it is to live in an age    20    human beings have begun to explore that space.

    1

A. cold               B. hot

C. cool               D. warm

    2

A. solid               B. water

C. steam             D. air

    3

A. surface             B. center

C. middle              D. bottom

    4

A. away              B. from

C. far               D. within

    5

A. lined               B. stood

C. put               D. tied

    6

A. food               B. things

C. energy              D. lives

    7

A. however           B. while

C. although           D. even if

    8

A. under             B. by

C. of                D. with

    9

A. explosion            B. noise

C. voice              D. sound

    10

A. very               B. relatively

C. specially           D. especially

    11

A. another             B. other

C. others             D. the others

    12

A. surface             B. bigness

C. color              D. light

    13

A. distance            B. space

C. time               D. place

    14

A. farthest             B. smallest

C. biggest             D. nearest

    15

A. too               B. such

C. quite               D. so

    16

A. for               B. with

C. in                 D. by

    </span>17

A. But               B. Beside

C. Nevertheless         D. In addition

    18

A. distance            B. range

C. time               D. space

    19

A. beyond             B. outside

C. out of             D. far from

    20

A. where             B. when

C. which             D. because

 

答案:B;A;B;B;A;C;C;A;D;D;B;C;A;A;D;A;D;B;A;B
解析:

1.因?yàn)樘柺?/span>flaming ball,因此上面應(yīng)該都是非常熱的熱氣。

2.因?yàn)榍懊嬗?/span>every修飾,所以這里只能用可數(shù)名詞。Solid在這里是固體的意思。

3.太陽中心的溫度是很高的。

4.表示距離地球多遠(yuǎn),要用介詞from

5.Line up是排列起來的意思,過去分詞作定語。

6.意思是太陽幾乎是我們所有能源的最初來源

7.后面這句話表述轉(zhuǎn)折。

8.在極高的熱度和極大的壓力下。

9.根據(jù)上句的提示可知這里說的是noise

10.11.同其它星星相比,太陽也并不是特別大,特別熱。

12.因?yàn)楹竺嬷v的是顏色,因此這里也應(yīng)該是顏色。

13.一光年是光在一年中穿越的距離。

14.最遠(yuǎn)的星星要距離幾十億光年遠(yuǎn)。

15.這里考查的是so …that句型。

16.這里是表示持續(xù)多長時(shí)間,要用介詞for

17.In addition,除此之外。

18.Within the range of sth.范圍之內(nèi)。

19.Beyond human comprehension,超出人類的理解力。

20.When引導(dǎo)的是定語從句。

 


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