题目内容
阅读下面短文,从每题所给的四个选项中选出最佳答案.
Three million people visit Pisa each year to see a tower. A look at the picture will tell you why. The tower leans! It is known as the Leaning Tower of Pisa.
The tower looks as if it might fall at any time. Engineers say that the visitors are safe--at least for a while. But the tower does lean. It slants (倾斜) 14 feet 10 inches at the present time. The tower has been leaning for 800 years. And every year it leans a little bit more. If this keeps on, the tower will fall.
If you look at the picture, you will see that one side of the tower is deeper in the earth than the other. Why has this happened?
Pisa's tower weights 14,500 tons. A heavy tower like this must have a very strong foundation. The Leaning Tower's foundation is just not deep or wide enough for the tower above it.
Can anything be done about the tower?
Italian engineers have special plans. They don't want to make the tower straight--just keep it from leaning any further. So all the plans ask for a new foundation that Won't sink. But a new foundation can't be built while the tower is resting on the old one. The tower must be raised.One plan is to place 15 big Jacks (千斤顶) around the tower. They would raise the tower and hold it up while the new foundation is being built.
The Italian engineers are searching for the best plan to rescue the tower. They know that any plan will take a lot of money. But many Italians refuse to believe that the old tower is in danger. “It leans and leans and leans,” they say “but it will never fall down.”
The engineers want to make sure that it won't.
(1)Engineers believe if the tower keeps on leaning, it will fall ________.
[ ]
(2)The tower is leaning because ________.
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A.the foundation of it is not strong enough
B.it was wrongly designed
C.it was designed so on purpose
D.the tower was built carelessly
(3)The Italian engineers want to ________.
[ ]
A.stop it from leaning further
B.make it straight
C.build a new tower
D.move the tower to a safe place
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