All our food very nice. [ ]A. is B. are C. am 题目和参考答案——青夏教育精英家教网—

题目内容

All our food _____ very nice.

[ ]

A. is
B. are
C. am

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　　All our food comes from the soil(土壤)．Some of us eat meat, but animals live on plants．If these were no plants, we should have no animals and meat．So the soil is necessary for life．

　　The top of ground is usually covered with grass or other plants．Plants grow in soil, which has a dark color．This dark soil is humus, dead leaves, dead plants and animal waste make it, but this takes a long time．When the humus has been made, plants can grow well in it．

　　All soil needs food．If we don’t give it any, the plants will be weak．Animals waste is the best food for the soil, but chemical fertilizers(化肥)are also very useful．The same crop should not be grown in the same place every year; it is better to have a different crop．A change of crop and the use of a good fertilizer will keep the land in good condition．

　　When the soil is dry, the wind blows it away．Sometimes heavy rain carries the humus down to a river．People should grow more and more trees and grass to stop wind from carrying the humus away．It takes hundreds of years to make humus, and so we must save every bit of it．Without soil, where can we grow food?

(1)

From the text, we know people live on ________．
[　　]
A．	animal
B．	plant
C．	meat
D．	soil

(2)

The word “humus” means ________ in Chinese．
[　　]
A．	微生物
B．	土壤
C．	腐殖土
D．	粘土

(3)

We should ________ to keep the soil．
[　　]
A．	give more fertilizers
B．	kill more animals
C．	make more humus
D．	grow more trees and grass

(4)

We should save every bit of humus, because ________．
[　　]
A．	it takes a long time to make humus
B．	the more humus in the soil, the better plants grow
C．	the chemical fertilizers are expensive
D．	A and B

(5)

The best title of this text should be ________．
[　　]
A．	Soil is necessary to people
B．	The same crop can’t be grown in the same place every year
C．	Soil’s food is chemical fertilizers
D．	Humus is hard to make

Nearly all our food comes from the soil（土地）. Some of us eat meat, of course, but animals live on plants. If there were no plants, we would have no animals and no meat. So the soil is very necessary for life. The top of the ground is usually covered with grass or other plants. There may be dead leaves and dead plants on the grass. The waste matter（粪）from animals also falls on it.
All soil needs food. If we do not give it any, the plants will be weak. Farmers found that animals’ waste is the best food for the soil, but chemical fertilizers（化肥）are also very useful. The same crop（庄稼）should not be grown in the same place every year, it’s better to have a different crop. A change of crop and the use of a good fertilizer will keep the land good.
【小题1】Which of the following is true?

A．All our food comes from the soil.

B．Most of our food comes from soil.

C．None of our food comes from the soil.

D．All our food comes from animals.

【小题2】What does the writer tell us in the first paragraph?

A．Leaves, plants, grass and waste live on each other.

B．There would be no animals without meat.

C．There would be no plants without animals.

D．People, animals, plants and soil live on each other

【小题3】Which is the best food for soil in the field?

A．Chemical fertilizers.	B．Plants and grass.
C．Animals’ waste.	D．Different crops.

【小题4】Why do we often grow a different crop in the same place every year?

A．Because we can keep the soil rich this way.

B．Because we don’t have enough land.

C．Because we want to have a different food.

D．Because we do this as a habit（习惯）.

All soil needs food. If we do not give it any, the plants will be weak. Farmers found that animals’ waste is the best food for the soil, but chemical fertilizers（化肥）are also very useful. The same crop（庄稼）should not be grown in the same place every year, it’s better to have a different crop. A change of crop and the use of a good fertilizer will keep the land good.

1.Which of the following is true?