ĐỀ KIỂM TRA CHẤT LƯỢNG HKI – ĐỀ SỐ 6 doc

ĐỀ KIỂM TRA CHẤT LƯỢNG HKI – ĐỀ SỐ 6

Conservation is the safeguarding and preservation of (1) ____ resources, so that they can continued to be

used and enjoyed. In the past, most people believe that the world’s resources could never be (2) _____ up.

Today, we know that this is not true. An important part of conservation is the prevention of waste – waste of

forests, soil, wild – life, minerals and human lives. As important is the fight (3) _________ pollution of our

environment, in particular, the dirtying and poisoning of air and water. Conservation is also concerned (4)

____the reclaiming of land by irrigating deserts, draining swamps or pushing back the sea.

Farmers can protect their land by yearly rotation of crops – that is, growing different crops (5) ____ the same

land from year to year. In this way, different elements of the soil have time to replace lost elements. Farmers

can help enrich the soil by adding fertilizers. They can prevent erosion by ploughing along the contours of a hill

rather than up and down. In this way water does not run off and take the soil with it.

Trees and shrubs are also needed to preserve land (6) ____ their roots bind the soil and retain water. When all

the trees in a region are cut, the soil can easily become loose and blow away.

Forests (7) ______ timber , one of man’s most valuable resources, but they must be managed carefully. Only

mature trees should be cut, leaving the young ones to grow bigger.

To protect wild – life, many countries have passed laws restricting hunting and fishing. Wild – life preserves,

areas where animals are protected (8) ______ their natural environment, are becoming more common in regions

where animal life is threatened.

Dirty air is chiefly a city problem. London’s famous “ pea soup” fogs were cleared by laws by forbidding the

burning of soft fuels : but car exhaust fumes continue to pollute the air. Some large cities may have to ban cars

(9) ______ the city centre to wipe out smoke.

Minerals that are taken from the Earth in immense quantities include petroleum, coal, natural gas, iron and

copper. Once used up, these minerals can never be replaced. To conserve them, we must cut waste and recycle (

put back into use ) the metal in discarded products, such as empty cans. Conservation also (10) _____ searching

for alternative fuels, such as the energy of the Sun.

Comprehension.

1. How are these following words explained ?

a. Conservation _________________________________________________

b. Yearly rotation _________________________________________________

c. Wild – life preserves _________________________________________________

d. Recycle _________________________________________________

2. Can you guess the meaning of the word fertilizers in this sentence ? : “ Farmers can help enrich the soil

by adding fertilizers”. _________________________________________________

3. Paragraph 1 mentions three things which make up conservation. What are they ? _____________

4. What is the sixth paragraph about ? _________________________________________________

5. The last sentence mentions another content of conservation . What is it ? _____________

Word – Study .

Fill in each blank with a noun corresponding to the verb in the same sentence.

1. We have to conserve the natural resources of our country.

Water __________ is necessary for hydropower stations.

2. We have made great efforts to develop our country. The industrial __________ will lead to the country’s

prosperity.

3. Farmers fertilize their land to make it productive. They apply __________into the fields after the crops

have been planted.

4. Some plants have to be well – protected. The tender plants need _______ against the cold weather.

5. We come to school to enrich our minds with knowledge. By giving the students up to date scientific

knowlegde, their mental ______ will be very worthwhile.

6. The farmers need to rotate their crops. The ________ of crops on the same land can prevent soil

exhaustion.

7. The weather continues to get worse and worse. Today’s weather will be a ______ of yesterday.