题目内容
What do you think of the most important inventions in the world? The TV? The printing? The telephone? Or the computer? A report shows that they are not the only important inventions.
Here are ___1___ other important inventions.One of the simplest inventions is the toilet(厕所).Before toilets,waste ran into rivers from ___2___ houses.Illnesses were common in big cities,and it was often difficult to find clean drinking water.
Animal food is another important invention.___3___ the invention,most animals were killed every autumn because there was not enough food for them in winter.After hay(干草)became a kind of common animal food,animals ___4___ live through the long winter.
The third great invention is glasses(眼镜).Glasses make people read,write and do “close work” easily after the age of 45.___5___ glasses,the world would be difficult for the people above 45.
1.A.two B.three C.four
2.A.people B.the people's C.people's
3.A.Before B.After C.During
4.A.can't B.could C.couldn't
5.A.For B.With C.Without
BCABC
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