摘要： After reading this, we can learn that A. plants can keep dry land from becoming desertB. it is good to get rid of the grass in the desertsC. all places without much rain will become desertsD. it is better to grow cropsdry land than to grow grassNew York, London, Paris and other big cities are exciting places to live in. There are many interesting things to see and to do. You can go to different kinds of museums, plays and films. You can also go shopping to buy things from all over the world.But there are serious problems in big cities too. The cost of living is high, and there are too many people in some of big cities. Every year many people move to the cities because there are some chances to find jobs, to study at good schools, and to receive good medical care. But sometimes these people can’t find work or a good place to live in. Also, too many people in a small space make it hard to keep the cities safe and clean.Some people enjoy living in big cities. Others do not. Before people enjoy move to big cities, they should think about the problems of living there.
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阅读理解。
Scientists are trying to make the deserts into good land again. They want to bring water to the deserts, so
people can live and grow food. They are learning a lot about the deserts. But more and more of the earth is
becoming desert all the time. Scientists may not be able to change the desert in time.
Why is more and more land becoming desert? Scientists think that people make deserts. People are doing
bad things to the earth.
Some places on the earth don't get much rain. But they still don't become deserts. This is because some
green plants are growing there. Small green plants and grass are very important to dry places. Plants don't let the
hot sun make the earth even drier. Plants don't let the wind blow the dirt away. When a little bit of rain falls, the
plants hold the water. Without plants, the land can become a desert much more easily.
people can live and grow food. They are learning a lot about the deserts. But more and more of the earth is
becoming desert all the time. Scientists may not be able to change the desert in time.
Why is more and more land becoming desert? Scientists think that people make deserts. People are doing
bad things to the earth.
Some places on the earth don't get much rain. But they still don't become deserts. This is because some
green plants are growing there. Small green plants and grass are very important to dry places. Plants don't let the
hot sun make the earth even drier. Plants don't let the wind blow the dirt away. When a little bit of rain falls, the
plants hold the water. Without plants, the land can become a desert much more easily.
1. Deserts _________.
[ ]
A. get very little rain
B. never have any plants or animals in them
C. can all be turned into good land in the future
D. both A and C
B. never have any plants or animals in them
C. can all be turned into good land in the future
D. both A and C
2. Small green plants are very important to day places because ________.
[ ]
A. they don't let the sun make the earth even drier
B. they don't let the wind blow the earth away
C. they hold the water
D. A, B and C
B. they don't let the wind blow the earth away
C. they hold the water
D. A, B and C
3. Land is becoming desert little by little because ________.
[ ]
A. plants can't grow there
B. there's not enough rain
C. people are doing bad things to the earth.
D. scientists know little about desert
B. there's not enough rain
C. people are doing bad things to the earth.
D. scientists know little about desert
4. Which is the main idea of the first paragraph?
[ ]
A. Scientists know how to change land into good land.
B. Land is becoming desert faster than scientists can change it back into good land.
C. If scientists can bring water to the desert, people can live there.
D. More and more places are becoming deserts all the time.
B. Land is becoming desert faster than scientists can change it back into good land.
C. If scientists can bring water to the desert, people can live there.
D. More and more places are becoming deserts all the time.
5. After reading this, we learn that ________.
[ ]
A. plant can keep dry land from becoming desert.
B. it is good to get rid of (清除) the grass in the desert
C. all places without much rain will become deserts
D. it is better to grow crops on dry land than to grow grass
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B. it is good to get rid of (清除) the grass in the desert
C. all places without much rain will become deserts
D. it is better to grow crops on dry land than to grow grass
阅读理解。
Scientists are trying to make the deserts into good land again. They want to bring water to the deserts, so
people can live and grow food. They are learning a lot about the deserts. But more and more of the earth is
becoming desert all the time. Scientists may not be able to change the desert in time.
Why is more and more land becoming desert? Scientists think that people make deserts. People are doing
bad things to the earth.
Some places on the earth don't get very much rain. But they still don't become deserts. This is because
some green plants are growing there. Small green plants and grass are very important to dry places. Plants
don't let the hot sun make the earth even drier. Plants don't let the wind blow the dirt away. When a little bit
of rain falls. The plants told the water. Without plants, the land can become a desert much more easily.
people can live and grow food. They are learning a lot about the deserts. But more and more of the earth is
becoming desert all the time. Scientists may not be able to change the desert in time.
Why is more and more land becoming desert? Scientists think that people make deserts. People are doing
bad things to the earth.
Some places on the earth don't get very much rain. But they still don't become deserts. This is because
some green plants are growing there. Small green plants and grass are very important to dry places. Plants
don't let the hot sun make the earth even drier. Plants don't let the wind blow the dirt away. When a little bit
of rain falls. The plants told the water. Without plants, the land can become a desert much more easily.
1. Deserts ______.
[ ]
A. get very little rain
B. never have any plants or animals in them
C. can all be turned into good land before long
D. both A and B
B. never have any plants or animals in them
C. can all be turned into good land before long
D. both A and B
2. Small green plants are very important to dry places because .
[ ]
A. they don't let the sun make the earth even drier
B. they don't let the wind blow the earth away
C. they hold water
D. all of the above
B. they don't let the wind blow the earth away
C. they hold water
D. all of the above
3. Land is becoming desert little by little because .
[ ]
A. plants can't grow there
B. there is not enough rain
C. people haven't done what scientists wish them to do
D. scientists know little about the deserts
B. there is not enough rain
C. people haven't done what scientists wish them to do
D. scientists know little about the deserts
4. Which is the main idea of the first paragraph?
[ ]
A. Scientists know how to change desert into good land.
B. Land is becoming desert faster than scientists can change it back into good land.
C. If scientists can bring water to desert, people can live and grow food there.
D. More and more places are becoming deserts all the time.
B. Land is becoming desert faster than scientists can change it back into good land.
C. If scientists can bring water to desert, people can live and grow food there.
D. More and more places are becoming deserts all the time.
5. After reading this, we learn that .
[ ]
A. plants can keep dry land from becoming desert
B. it is good to get rid of the grass in the deserts
C. all places without much rain will become deserts
D. it is better to grow crops on dry land than to grow grass
查看习题详情和答案>>
B. it is good to get rid of the grass in the deserts
C. all places without much rain will become deserts
D. it is better to grow crops on dry land than to grow grass
阅读理解。
Scientists (科学家) are trying to make the deserts (沙漠) into good land again. They want to bring water
to the deserts, so people can live and grow food. They are learning a lot about the deserts. But more and more
of the earth is becoming desert all the time. Scientists may not be able to change the desert in time.
Why is more and more land becoming desert? Scientists think that people make deserts. People are doing
bad things to the earth.
Some places on the earth don't get very much rain. But they still don't become deserts. This is because
some green plants are growing there. Small green plants and grass are very important to dry (干的) places.
Plants don't let the hot sun make the earth even drier. Plants don't let the wind blow (吹) the dirt (土) away.
When a little rain falls, the plants hold the water. Without plants, the land can become a desert much more
easily.
to the deserts, so people can live and grow food. They are learning a lot about the deserts. But more and more
of the earth is becoming desert all the time. Scientists may not be able to change the desert in time.
Why is more and more land becoming desert? Scientists think that people make deserts. People are doing
bad things to the earth.
Some places on the earth don't get very much rain. But they still don't become deserts. This is because
some green plants are growing there. Small green plants and grass are very important to dry (干的) places.
Plants don't let the hot sun make the earth even drier. Plants don't let the wind blow (吹) the dirt (土) away.
When a little rain falls, the plants hold the water. Without plants, the land can become a desert much more
easily.
1. Deserts ______.
[ ]
A. get very little rain
B. never have any plants or animals in them
C. can all be turned into good land soon
D. both A and C
B. never have any plants or animals in them
C. can all be turned into good land soon
D. both A and C
2. Small green plants are very important to dry places because ______.
[ ]
A. they don't let the sun make the earth even drier
B. they hold water
C. they don't let the wind blow the earth away
D. all of the above
B. they hold water
C. they don't let the wind blow the earth away
D. all of the above
3. Land is becoming desert little by little (渐渐地) because ______.
[ ]
A. Plants can't grow there
B. There is not enough rain
C. People haven't done what scientists wish them to do
D. Scientists know little about the deserts
B. There is not enough rain
C. People haven't done what scientists wish them to do
D. Scientists know little about the deserts
4. Which is the main idea of the first paragraph (段, 节)?
[ ]
A. Scientists know how to change desert into good land.
B. Land is becoming desert faster than scientists can change it back into good land.
C. If scientists can bring water to desert, people can live and grow food there.
D. More and more places are becoming deserts all the time.
B. Land is becoming desert faster than scientists can change it back into good land.
C. If scientists can bring water to desert, people can live and grow food there.
D. More and more places are becoming deserts all the time.
5. After reading this, we learn that ______.
[ ]
A. plants can keep (阻止) dry land from becoming desert
B. it is good to get rid of (去除) the grass in the deserts
C. all places without much rain will become deserts
D. it is better to grow crops (农作物) on dry land than to grow grass
查看习题详情和答案>>
B. it is good to get rid of (去除) the grass in the deserts
C. all places without much rain will become deserts
D. it is better to grow crops (农作物) on dry land than to grow grass
阅读理解。
Scientists are trying to make the deserts (沙漠) into good land again. They want to bring water to the
deserts, so people can live and grow food, They are learning a lot about the deserts. But more and more
of' the earth is becoming desert all the time. Scientists may not be able to change the desert in time.
Why is more and more land becoming desert? Scientists think that people make deserts. People are
doing bad things to the earth.
Some places on the earth don't get much rain. But they still don't become deserts. This is because
some green plants are growing there. Small green plants and grass are very important to dry places.
Plants don't let the hot sun make the earth even drier. Plants don't let the wind blow the dirt away. When
a little bit of rain falls, the plants hold the water. Without plants, the land can become a desert much more
easily.
根据短文内容，选择正确答案。
l. Deserts
A. get a little rain
B. never have any plants or animals in them
C. can't be turned into good land in the future
D. both A and C
2. Small green plants are very important to dry places because .
A. they don't let the sun make the earth even drier
B. they don't let the wind blow the earth away
C. they hold the water
D. A, B and C
3. Land is becoming desert little by little because
A. plants can't grow there
B. there's not enough rain
C. people are doing bad things to the earth
D. scientists know little about desert
4. Which is the main idea of the first paragraph?
A. Scientists know how to change deserts into good land.
B. Land is becoming desert faster than scientists can change it back into good land.
C. If scientists can bring water to the desert, people can live there.
D. More and more places are becoming deserts all the time.
5. After reading this paragraph, we learn that
A. plants can keep dry land from becoming desert
B. it is good to get rid of (清除) the grass in the desert
C. all places without much rain will become deserts
D. it is better to grow crops on dry land than to grow grass
查看习题详情和答案>>
deserts, so people can live and grow food, They are learning a lot about the deserts. But more and more
of' the earth is becoming desert all the time. Scientists may not be able to change the desert in time.
Why is more and more land becoming desert? Scientists think that people make deserts. People are
doing bad things to the earth.
Some places on the earth don't get much rain. But they still don't become deserts. This is because
some green plants are growing there. Small green plants and grass are very important to dry places.
Plants don't let the hot sun make the earth even drier. Plants don't let the wind blow the dirt away. When
a little bit of rain falls, the plants hold the water. Without plants, the land can become a desert much more
easily.
根据短文内容，选择正确答案。
l. Deserts
A. get a little rain
B. never have any plants or animals in them
C. can't be turned into good land in the future
D. both A and C
2. Small green plants are very important to dry places because .
A. they don't let the sun make the earth even drier
B. they don't let the wind blow the earth away
C. they hold the water
D. A, B and C
3. Land is becoming desert little by little because
A. plants can't grow there
B. there's not enough rain
C. people are doing bad things to the earth
D. scientists know little about desert
4. Which is the main idea of the first paragraph?
A. Scientists know how to change deserts into good land.
B. Land is becoming desert faster than scientists can change it back into good land.
C. If scientists can bring water to the desert, people can live there.
D. More and more places are becoming deserts all the time.
5. After reading this paragraph, we learn that
A. plants can keep dry land from becoming desert
B. it is good to get rid of (清除) the grass in the desert
C. all places without much rain will become deserts
D. it is better to grow crops on dry land than to grow grass