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Scientists are very interested in the un...

    Scientists are very interested in the universe and they always want to know more about it.Years ago they knew many things about the _______. They knew how big it was and _______ it was from the earth. _______ they still wanted to know more. They thought the _______ way was to send _______ to the moon. The moon is about 384,000 kilometres away from the earth. A plane cannot fly to the moon because the _______ reaches only 240 kilometres away from the earth. But _______ can fly even when there is no air. That is rocket.

How can a rocket fly? If you want to know, get a balloon and then blow it up until it is quite big. Do not tie up(系紧)the neck of the balloon, but let it go! The balloon will fly off through the air very quickly. The air inside the balloon tries to get out. It rushes out _______ the neck of the balloon and this pushes the balloon through the air. It does not need wings like a plane.

There is gas(气体) in the rocket. So it can fly out into _______. Rockets with men in them have been to the moon. Several rockets have already flown to ________ planet much farther away than the moon. One day, rockets may be able to go to any place in space.

1.A.star B.moon C.sun D.planet

2.

A.how much B.how long

C.how many D.how far

3.

A.So B.And

C.But D.Or

4.

A.worst B.best

C.secret D.correct

5.

A.teachers B.men

C.animals D.computers

6.

A.air B.light

C.Jupiter D.Mars

7.

A.anything B.nothing

C.something D.none

8.

A.by B.on

C.from D.through

9.

A.space B.air

C.cloud D.station

10.

A.the others B.another

C.the other D.others

 

1.B 2.D 3.C 4.B 5.B 6.A 7.C 8.D 9.A 10.B 【解析】 本文是一篇科普类说明文。文章主要介绍了科学家为了对月球有更多的了解,用火箭将人送上了月球。那么火箭为什么可以在太空飞行呢?原来是通过释放火箭中的气体给火箭一个足够大的推力,即使火箭没有机翼也可以飞行,并且可以在太空中飞行。 1.句意:多年前,他们就对月球有很多了解。 star 星星;moon 月亮,月球;sun 太阳;planet 行星。根据短文第五句中的“to the moon”可知多年前科学家们就对月球有所了解,故选B。 2.句意:他们知道月球的大小以及距地球有多远。 how much多少,询问不可数名词数量或价格;how long多长,询问时间或长短;how many多少,询问可数名词数量;how far多远,询问距离。根据空格后“...it was from the earth”可知此处讲的是月球和地球间的距离,it指代前半句的月球,故选D。 3.句意:但是他们仍然想知道更多。 So所以,表结果;And和,表并列;But但是,表转折;Or或者,表选择。根据文章第二句“Years ago they knew many things...”和后文“...they still wanted to know more.”可知尽管科学家已经知道了很多关于月球的事,但是他们仍然想知道更多,表转折,故选C。 4.句意:他们认为最好的方法是将人送上月球。 worst最糟糕的;best最好的;secret秘密的;correct正确的。根据前文“...they still wanted to know more.”和空格句中的“send ... to the moon”可推测把东西送到月球上实地考察肯定是“best 最好的”了解月球的方式,故选B。 5.句意:他们认为最好的方法是将人送上月球。 teachers老师;men男人,人类;animals动物;computers电脑。根据空格句中的“send ... to the moon”可知科学家想要把什么东西送到月球上实地考察获得更多信息,结合选项,人肯定比电脑机动性大,men人类符合语境,故选B。 6.句意:飞机无法飞向月球,因为空气仅距地球240公里。 air空气;light光线;Jupiter木星;Mars火星。根据第一段倒数第二句中的“...when there is no air”可知火箭不需要在空气中飞行但是飞机需要,飞机无法飞向太空的原因就是空气在距离地球240公里的高度就消失了,故选A。 7.句意:但是,即使没有空气,某些东西也可以飞。 anything任何东西;nothing没有什么;something一些东西;none没有一个。根据由于前文提到飞机要在空气中才能飞行,根据“but 但是”推断后面讲的东西肯定和飞机不一样,它不用在空气中也能飞,这种东西是存在的,所以排除B、D;anything一般用于否定句和疑问句,A排除;题干为肯定句,C符合要求,故选C。 8.句意:它从气球的颈部冲出,将气球推进空气中。 by通过……的方式;on在……上面;from来自……,强调来源;through(从内部)穿过。空格句的主语是it,指代的是前文的“The air inside the balloon 气球里的气体”,气体由气球内部穿过气球颈部然后冲出,用through最为恰当;空格后的宾语是“the neck of the balloon 气球的颈部”不是方式,所以排除A;B语义不符;C强调的重点和句意不符;故选D。 9.句意:因此,它可以飞入太空。 space太空;air空气;cloud云;station站。根据空格后一句“Rockets with men in them have been to the moon. 载人火箭已经去过了月球。”可知火箭能飞入的是太空,故选A。 10.句意:几枚火箭已经飞到了比月球更远的另一颗行星上。 the others=the other +名词,其他的,表特指;another另外的,表泛指;the other其他的,表特指;others=other+名词,其他的,表泛指。根据常识可知太空中的行星有很多,此处未特指某颗行星,所以排除A和C;又空格后有名词,所以排除D;another planet表示很多其他行星中的任意一个,符合题意,故选B。
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