----- Nội dung dịch tự động từ ảnh -----
IX. Read and answer
Conservation is the safeguarding and preservation of natural resources, so that they can continue to be used and
enjoyed. In the past, most people believed that the world's resources could never be used up. Today, we know that this
is not true. An important part of conservation is the prevention of waste waste of forests, soil, wildlife, minerals and
human lives. As important is the fight against pollution of our environment, in particular, the dirtying and poisoning of air
and water. Also, conservation is concerned with the reclaiming of land. Farmers can protect their land by growing different
crops on the same land from year to year. In this way, different elements of the soil have time to replace lost elements.
They can prevent erosion by plowing along the contours of a hill rather than up and down so water doesn't run off the
surface and take the soil with it.
1. What is the main topic discussed in the passage?
A. Natural resources
B. Conservation
C. Erosion
B. They were poisoned and dirtied.
D. They were too expensive to use.
2. What did people use to think of the world's resources?
A. They were not valuable.
C. They would never run out.
3. What kind of conservation is not mentioned in the passage?
A. reclaiming land.
C. preventing waste.
4. Farmers are advised to
B. finding new kinds of energy.
D. fighting against pollution.
B. plow up and down.
D. replace the soil.
D. Pollution
A. plow along contours.
C. grow the same crop.
5. Which of the following can best replace the phrase "is concerned with"?
A. excludes
B. worries about
C. is filled with
D. includes