《2025年自主学习能力测评单元测试九年级英语全一册外研版》

C
As space science develops,man has learnt more and more about space.Space is not
only amazing but also dangerous.While working in space,spacemen are facing danger as
well as success.
Scientists have found out that the radiation(辐射)is the greatest danger to spacemen
in space.When spacemen are working in space,they are in danger of the radiation from the
sun and other stars,which is bad for their health.The harm of the radiation won't be found
until their children even grandchildren are born.Some special medicine may work a little,
but no really effective medicine has been found so far.
Space rubbish is also thought to be a great danger to spacemen.It's reported that there
were 9,000 man-made things flying in space.About 30% of these are satellites,10% are
spaceships,and the rest are space rubbish.An explosion(爆炸)in space in 1999 made a
cloud of 300,000 fragments,each at least 4 mm in size.A small piece of these even knocked
a spaceship window and caused some damage(损失).
Scientists are watching and reporting any possible danger all the time.They are
working to deal with space rubbish.Although space is really dangerous,it interests many
people on the earth.In the future,it may become possible for people to spend a few days in
a space hotel.We may even choose to leave the earth and live in space years later.So we
should do something to help improve the space environment.
根据语篇内容,选择最佳选项。
(B)56.Which one shows the percentage of man-made things in space in a correct way?
A.Space rubbish:20%; Spaceship:0%; Satellites:40%.
B.Space rubbish:60%; Spaceship:10%; Satellites:30%.
C.Space rubbish:50%; Spaceship:20%; Satellites:30%.
(C)57.How is the radiation from the sun and other stars to spacemen?
A.Good. B.Helpful. C.Harmful.
(A)58.What does the underlined word “fragments” mean in Chinese?
A.碎片 B.泡沫 C.烟雾
(A)59.How many kinds of danger in space are mentioned in the passage?
A.Two. B.Three. C.Four.
(C)60.Which of the following is TRUE?
A.Scientists have found out ways to solve any problem in space.
B.Every one of us can have a travel to space in ten years.
C.The harm of the radiation may be found in the spacemen's children.

答案： 56.B 57.C 58.A 59.A 60.C