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 sun make the earth even drier. Plants don’t let the wind blow the dirt away. When a bit of rain falls, the plants hold the water. Without plants, the land can become desert more easily. A man decides to make a farm in a very dry place. He digs in the earth and takes away the grass and plants that are already growing on the dry land. He makes a farm. He puts plants in rows. The sun is very hot. It makes the land even drier. When the rain comes, it runs between the rows of plants. It washes the good dirt away. When the wind comes, it blows between the rows of plants. It blows the good dirt away. Soon the land is not good enough for a farm any more. The man lets his animals eat all the plants on it. Now the land does not have any plants on it. The sun and wind dry the land and all of the good dirt away. Now the land is a desert.

It can be inferred from the passage that______.

A．it is bad to plant in rows in a dry place

B．it is better to raise animals on dry land than to make a farm

C．it is bad to make a farm in a dry place, but it is good to raise animals there

D．all lands that don’t get very rain are deserts

What’s the purpose of the writer to give an example of the man?

A．To criticize him.

B．To tell an interesting story.

C．To prove that man makes deserts.

D．To prove the hot sun makes a desert.

Which of the following is NOT the reason why small green plants are very important to dry places?

A．They keep the earth from becoming even drier.

B．They do not let wind blow the earth away.

C．They add color to the dry places.

D．They hold water.

If it______tomorrow, we will go to the park to take pictures. will snow would snow snows snowed

The flowers looked as if they______for a long time. haven’t watered didn’t water hadn’t been watered watered

Had it not been for his carelessness, David______ the first prize in the mathematics contest. would win would have won will win won

______of an unhappy marriage, she felt greatly relieved and was eager to embrace a new life. To be free Freeing To free Freed

I am sorry! I kept______for such a long time, for the machine didn’t work properly. you waited you wait you to wait you waiting

Not only______the nurses want a pay increase, they wanted reduced hours as well. did do have had

The chairman______unexpectedly at the meeting. We thought he was still in hospital. turned in turned over turned up turned down

It’s so pleasant to stand in the forest and______fresh air. take in take out bring in come out

He kept walking up and down, which was a sure______that he was worried. sign character nature end

Recently a kind of traditional Chinese medicine is quite popular in the United States, for it is effective to______patients of their cough. treat mend recover cure

The great scientist worked 10 hours a day______his old age. in spite of in spite despite of despite with

As I changed my plan, I phoned the hotel to______ my reservation. accept cancel refuse reach

Asking about a lady’s age is considered to be an_____ question in western cultures. embarrassing interesting embarrassed interested

To be a good teacher, you need some of the gifts of a good actor, you must be able to【C1】______the attention and interest of your students, you must be a【C2】______speaker, with a good, strong, 【C3】______voice which is fully under your control; and you must be able to【C4】______what you are teaching, in order to make its meaning clear.【C5】______a good teacher, and you will see that he does not sit still【C6】______his class: he stands the whole time he is teaching; he walks about, using his【C7】______, hands and fingers to help him in his explanations, and his face to express feeling. Listen to him, and you will【C8】______the loudness, the quality and the musical note of his voice always【C9】______according to what he is【C10】______about. The fact that a good teacher has some of the gifts of a good actor doesn’t【C11】______that he will indeed be able to act【C12】______on the stage, for there are very important【C13】______between the teacher’s work and the actor’s. The actor has to speak words which he has learnt by heart; he has to repeat exactly the【C14】______words each time he plays a certain part, 【C15】______his movements and the way in which he uses his voice are usually【C16】______beforehand. What he has to do is to make all these carefully learnt words and actions seem【C17】______on the stage. A good teacher【C18】______in quite a different way. His students take an active part in his【C19】______; they ask and answer questions, they obey orders, and if they don’t obey something, they will say no. The teacher therefore has to suit his act to the needs of the students. He cannot learn his part by heart, but must【C20】______it as he goes along.

It includes a variety of goods and services, many of which could be called “luxury“ items.

In some city centers, workaholism is so common that people do not consider it unusual.

著名电影导演大卫被邀请来参加电影节。

现在的自然环境比10年前好多了。

She sent her two children to the boarding school when______was only eight. the youngest the most younger the younger the more younger

The person I trusted most was a friend ______ I had been cooperating in business for a long time. whom with whom with who that

It can be inferred from the passage that______.

What’s the purpose of the writer to give an example of the man?

Which of the following is NOT the reason why small green plants are very important to dry places?

Land is becoming desert because of lack of______.

A desert is probably______.