Question

完形填空

Scientists think that there      life on the earth for hundreds of millions of years. However, we have not found life on any other planets       .

The earth is a planet and it            around the sun. Seven other planets also go around the sun.       of them has an environment like that of the earth, so scientists do not think they will find life on them. The sun and its planets are called the solar system, and our solar system is a small part of a much larger group of stars and planets,        the Galaxy or the Milky Way.

There are billions of stars in the Galaxy, and our sun is only one of them.

Scientists have also discovered many other galaxies in the universe. They are very far away and their light has to travel for many years to reach us. So          is the universe? It is impossible to imagine.

Scientists have sent spaceships to the planet Mars         . They have even

sent spaceships to travel outside the solar system. However, no spaceship has travelled     to reach other stars in our Galaxy.

Scientists have always asked the questions: with so many stars in the universe, are we       , or is there life out there in space? Have there been visitors to the earth from other planets? Why has     communicated with us? We do no know the answers... yet.

1.A. have been      B. has been     C. is            D. are

2.A. yet             B. already      C. just          D. ever

3.A. go              B. went          C. goes         D. going

4.A. no one          B. neither       C. either        D. none

5.A. called          B. call          C. to call       D. calls

6.A. what large      B. how small     C. how large     D. how long

7.A. to take photos B. take photos   C. taking photos  D. takes photos

8.A. enough far     B. enough near   C. far enough    D. near enough

9.A. lonely         B. alone        C. along          D. alonely

10.A. someone      B. anyone       C. somebody     D. no one

Answer

1.B

2.A

3.C

4.D

5.A

6.C

7.A

8.C

9.B

10.D

【解析】

试题分析：这篇短文讲的是地球存在生命已有几百万年的时间，然而其他星球是什么样的？有没有生命存在，这一直是科学家们在探索的问题。

1.B考查动词时态与语境理解。句意：科学家们认为地球上存在生命已有几百万年的时间了。根据句意及时间状语 for hundreds of millions of years可知此空应用现在完成时态，there be句型中的主语是不可数名词life，所以用has been，故选B。

2.A考查副词与语境理解。A yet还，已经，用于否定句和疑问句；B already已经，常用于肯定句；C just刚刚；D ever曾经。句意：然而我们在其他星球上还没有发现生命存在。根据句意及语境此题应选A。

3.C考查动词与语境理解。句意：气球是一个行星，它绕着太阳转。根据句意及语境这是一个客观事实，所以用一般现在时态，主语是单数，故选C。

4.D考查不定代词与语境理解。A no one没有人；B neither两者都不；C either两者中的一个；D none三者或三者以上都不。句意：它们中没有一个有向地球那样的环境。根据句意及题干分析此空是三者或三者以上都不且和of连用，故选D。

5.A考查动词与语境理解。句意：我们的太阳系是一个更大的星星和行星组合的一小部分，这就是银河系。根据句意及题干分析此空应用过去分词作定语，所以用called，是被叫做的意思。

6.C考查动词疑问词与语境理解。句意：所以宇宙有多大？这很难想像。根据句意及语境“多大”应用how large，故选C。

7.A考查动词与语境理解。句意：科学家已经发射宇宙飞船到火星去拍照片。根据句意及题干分析此空应用不定式作目的状语，故选A。

8.C考查副与语境理解。A enough far； B enough near ；C far enough足够远；D near enough 足够近。句意：然而没有宇宙飞船行程足够远到达我们银河系的其他星球。根据句意及题干分析“足够远”是C。

9.B考查同义词与语境理解。A lonely孤独的；B alone 单独；C along沿着；D alonely单独地。句意：我们是单独地吗？根据句意及语境此空是说我们人类是否是在宇宙单独的存在着，故选B。

10.

考点：科普类短文阅读