Ⅲ. 完形填空。(10分)

In 1997, Americans decided to launch two space probes (探测器). They were 41

Voyager I and VoyagerⅡ. They sent 42 photos and facts about the more distant planets. Now they are traveling out in the galaxy(星系). Here are some facts about the Voyager spacecraft.

The total cost of the Voyager mission(任务) is 865 million dollars. This 43 very expensive. But it is only twenty cents for each American each year.

The television cameras of the Voyager are 44 powerful that they could read a newspaper headline at a distance 45 one kilometer. But there aren’t any newspapers in space!

Scientists have put a message on the Voyager spacecraft. We hope that someone will find it one day. But the Voyager will 46 40, 000 years to reach another solar system like ours, with planets.

The message is on a special disc, a bit like a CD. The disc has sounds and pictures on it. There are thirty-nine sounds of the earth. Some of them are natural sounds, 47 the sea, wind, and thunder(雷声). Some are animal sounds, such as birds, dogs, and humans. Some are man-made sounds, like machines, buses, and trains. They also 48 on music from many different countries. Finally there are 49 greetings from earth-people in fifty-five languages. There 50 a message in English from the president of America. There are also 116 pictures of the earth and its people.

( )41.A.call B.calls C.called D.to call

( )42.A.to B.back C.into D.up

( )43.A.is B.sound C.may be D.sounds

( )44.A.so B.such C.too D.much

( )45.A.at B.to C.of D.with

( )46.A.costs B.spend C.pay D.take

( )47 A.for example B.such as C.as D.likes

( )48.A.take B.make C.put D.bring

( )49 A.speak B.speaking C.spoke D.spoken

( )50.A.is B.will be C.have been D.are