There was a famous scientist who made several important discoveries. Once he was asked how he was able to be so _______. He_______that it all came from an experience he had with his mother when he was 2 years old. He was trying to take a bottle of_______ out of the fridge. But the bottle was too slippery (滑的) and he dropped it. The kitchen floor was covered in milk.

When his mother came into the kitchen, instead of shouting at him or punishing him, she said, “Robert, what a _______ mess you have made! I have never seen such a huge puddle of milk. Would you like to play in the milk for a few minutes_______we clean it up?“

_______ . After a few minutes, they cleaned it up together. Then his mother said, “This was a failed experiment (实验) in how to carry a big bottle of milk with two tiny hands. Let's go out in the backyard and fill the bottle with water and see if you can find a way_______ it without dropping it.“

The little boy learned that if he held the bottle at the top near the lip (边缘) with both hands, he could carry it without dropping it_______ wonderful the lesson was!

The scientist then added that it was at that moment that he knew he didn't need to be afraid to_________. He learned that mistakes are just chances to learn________________ which is, after all, what scientific experiments are all about

1.A.fast B.happy C.creative D.strong

2.A.replied B.knew C.thought D.realized

3.A.water B.juice C.cola D.milk

4.A.bad B.wonderful C.wrong D.different

5.A.before B.after C.as soon as D.when

6.A.So he was B.So was he C.So he did D.So does he

7.A.carry B.to carry C.carried D.carrying

8.A.what a B.what C.how a D.how

9.A.make decisions B.make mistakes C.make progress D.make noises

10.A.anything new B.new anything C.something new D.new something

Space travel is nothing new.The first spaceship with a human was sent up _____ space in 1961.Since then,people have not only travelled to space,_____ many of them have also lived there in space stations for some time.

The Soviet Union(苏联)sent the _____ space station into space in 1971.This space station was called Salyut Ⅰ.It _____ as a place where people could live while they observed space and did experiments.The first group of astronauts lived there for 23 days.The Soviet Union went on to make seven more Salyut space stations.At about the same time,the United States had _____ own space station,called Skylab.

Astronauts _____ in these space stations for a short time.However,it wasn't until the late 1980s when the Soviet Union sent the Mir space station that people began to live in space for a _____ time.

Living in space stations seems to be fun,but astronauts face many problems.One of them _____ food.All the _____ on space stations are put together on Earth and sent there by spaceship.Because the food has to last a long time,a lot of it has to be stored in cans.The space station does not have a fridge,but it has a cool room to keep fruit and vegetables fresh.Astronauts also eat many other foods ______ dried meat that do not need special care.

1.A.into B.with C.of

2.A.for B.but C.unless

3.A.ones B.one C.first

4.A.was found B.was built C.was bought

5.A.them B.they C.its

6.A.lived B.played C.took

7.A.more B.shorter C.longer

8.A.am B.is C.are

9.A.apple B.vegetable C.meals

10.A.such as B.at last C.next to

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