题目内容

Water usually freezes when the temperature is ________ zero and ice changes into water again when the temperature is ________ zero.

[  ]
A.

under; over

B.

below; above

C.

above; below

D.

below; over

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In old times,man considered lightning to be one of the great mysteries(神秘事物)of nature.In fact a single flash of lightning 1.6 kilometers long has enough electricity to light one million lamps.
The American scientist,Benjamin Franklin,was the first to suggest that lightning is in fact electricity formed between the earth and clouds high above.It happened in 1752.In the same year,he also built the first lightning rod(避雷针)to protect buildings from being struck by lightnings.
Modern science has discovered that lightning is very strong and powerful.A lightning between a cloud and the earth may be as long as 13 kilometers,and travels at a speed of 30 million meters per second.Scientists have the opinion that there are about 2000 million flashes of lightning per year.In the United States alone,it kills almost one person per day.
The safest place to be in during an electrical(电的)storm is a closed car.Outside,one should go close to low ground for cover and not stop under a tree.Also one should stay out of water and away from metal fences.Inside a house people should keep away from open doorways and windows and not touch wires or metal things.
【小题1】From this passage we know lightning is____.
A.one of the great mysteries of nature.
B.electricity high above the earth.
C.a kind of light.
D.the sound from the clouds.
【小题2】In the U.S____.
A.every person can see lightning every day.
B.at least one person is killed by lightning every day.
C.there are about 6 million flashes of lightning per year.
D.about one person per day dies from lightning.
【小题3】During a lightning storm,it would be best if you____.
A.stand under a tree.
B.go outside.
C.stay in a closed car.
D.stop near windows.
【小题4】A lightning rod can______.
A.prevent accidents caused by lightning
B.stop lightning
C.protect buildings from being washed away.
D.delay the coming of lightning
【小题5】A lightning between a cloud and the earth may be 13 kilometers long,and travels at
a speed of ______.
A.30 kilometres per second.
B.3000 kilometres per second
C.3 kilometres per second
D.30,000 kilometres per second

An old farmer lived with his little grandson. Every day the farmer got up early to read books.
One day the grandson asked, “Grandpa! I want to read books just like you, but I don’t understand them. What are the advantages of reading?” The grandfather said, “Take this little basket to the river and bring me back a basket of water.” The boy did so, but all the water leaked out before he got back to the house. The grandfather laughed and said, “ You’ll have to walk faster next time.”
This time the boy ran faster, but again the basket was empty before he returned home. The boy said, “ See Grandpa, it’s useless!”
“So you think it is useless?” the old man said. “ Look at the basket.”
The boy looked at the basket and for the first time he realized that the basket was different. It was clean, inside and out.
“That’s what happens when you read books. You might not understand or remember everything, but when you read them, you will be changed, inside and out.”
【小题1】The underlined phrase “leaked out” means “______” in Chinese.

A.出现B.保留C.漏出D.爆发
【小题2】The passage might be written for ___________ to read.
A.children who like asking questions
B.children who like playing with water
C.children who dislike farming
D.children who dislike reading
【小题3】The basket was ________ in the end.
A.lightB.cleanC.uselessD.dirty
【小题4】What can we know from the passage?
A.The old farmer might be changed by reading.
B.The old farmer played tricks on his grandson.
C.The little boy got a full basket of water at last.
D.The old farmer was angry when he saw the empty basket.

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