The number of students in the class _____ limited to fifteen.

a. have b. are c. is　 d. had

When she came several days later, she found that all things still _______ where she had _______ them.

A. lay; laid　　　　　　　　 B. laid; laid

C. lay; lain　　　　　　　　 D. lying; lain

—Shall I tell John about it?

—No, you ________. I’ve told him already.

A. needn’t　　　 B. wouldn’t

C. mustn’t　　　 D. shouldn’t

　 Weather changes when the temperature and the amount of water in the atmosphere changes. We can see and

feel water coming from the atmosphere when we have rain. But the water must somehow get back to the atmosphere. Meteorologists call this the water cycle.

There are many stages in the water cycle. Rain falls when water vapor in clouds condenses(凝結(jié)). Drops of water form and fall to the ground. The water soaks into the ground and feeds steams and rivers. A lot of rain falls into the sea. The heat of the sun evaporates some of the water in the ground and in the rivers, lakes, and the sea. It changes the liquid water into water vapor. The vapor rises onto the air. Water vapor is normally invisible. On a very damp or humid day, however, you can sometimes see water vapor rising from a puddle(水坑) or pond in a mist(薄霧)above the water. Water vapor also gets into the air from living things. Trees and other plants take in water through their roots and give off water vapor from their leaves. People and land animals drink water and breathe out water vapor. In all these ways the water returns to the air. There it gathers to form clouds and condenses to form rain. The rain falls to earth, and the cycle starts again. It continues even if snow or hail(冰雹) fall instead because both eventually melt to form water. The amount of water vapor in the air depends on the temperature. The air is more moist(潮濕)in the tropics(熱帶) than in the cold polar regions.

1. What is the main idea of the passage?

A. Water cycle　　 B/ Water vapor　 C. How rain forms　 D. Water ,vapor, rain

2. How many ways of the water returning to the air are discussed in the text?

A. Two　 B. Three　 C. Four　 D. Five

3. Whether water vapor can be seen or not depends on _______.

A. how much water is evaporated　 B. how good your eyes are

C. in which way water is evaporated　 D. climate or weather

4. From the passage we get to know___________.

A. there is more water vapor in the air in the tropics than in cold polar regions

B. there is more water vapor in the air in cold polar region than in the tropics

C. it gets more rain in the tropics than in cold polar regions because there is less vapor

D. the amount of water vapor in the air depends on how often it rains

It was a long time　　　 the miners in Chile were rescued from under the mine.

　 A．until　 B．when 　 C．before D．since

If you ______ go, at least wait until the rain stops.

　 A. can　 　　　 B. would　 　 　　　 C. should 　　　 D. must

____ the girl didn’t take her medicine made her mother angry.

　　A. Why B. Whether C. That D. When

You can’t borrow books from the school library ______ you get your student card.
A. before         B. if               C. while         D. as

On that rainy night, he walked ______ as the small town which was 20 miles to call a doctor in.

A. as far; far B. as far; away 　　　　　　　　 C. so far; far away 　 D. as far; for away

When Johnny Cash sings, people listen. His big, deep voice rumbles out of radios and juke-boxes across North America. His records sell by the million. Country-music fans everywhere, know his big hits. They love songs like "Hey Porter", "Ring of Fire", and "Folsom Prison Blue".

Johnny Cash sings about a hundred concerts a year. People like what they hear--and what they see, too. Rugged and big-shouldered, the singer stands six-two without his black boots on.

He's a two-hundred-pound package of muscle and talent. And that scar(疤痕)on his cheek? It's a bullet(子彈)hole, of course!

In the minds of most people, Johnny Cash is "Mr Tough (violent) Guy". He's an ex-drug addict who was once put in prison. His grandmother was an Indian. To keep from starving, he once had to live on wild rabbits killed from forty feet away with a knife. Some people say he even killed a man.

In fact, most of the Johnny Cash story is just that--a story. True, years ago he had a "drug habit "for a short time. He "popped" pills. But he never used heroin or other "hard "drugs. Some- times he'd go wild and get locked up for a few hours . But he never served a prison sentence.

There's no Indian blood in his veins. He's been a killer only in song. As for the "bullet hole",

it's an old scar left by a doctor who opened a cyst(囊腫).

People who know Johnny Cash well say he's a "gentle guy", a "generous guy'--anything but a "tough guy". How did the stories get started? Some of them like the story about the "Indian grandmother", he made up long ago to add excitement to his career. Others, like the "bullet hole”, simply got started. Now there's little the singer can do to change people's minds. "They just want to believe it," he says.

1. Johnny Cash is a favorite of many　　　　　 .

A. opera lovers　　　 　　　　　　　　　　　　B. country music fans

C. hard-rock fans　　　　　　　　　　　　　　 D. jazz music lovers

2. In truth, Johnny Cash　　　　　　 .

A. invented the "Indian grandmother"

B. used to kill rabbits for a living

C. had a bullet hole on his cheek

D. served a long prison sentence

3. In his private life, Johnny Cash is, 　　　　　　　　.

A. much wilder than he looks

B. much smaller than he is on stage

C. much tougher than he is in public

D. much more gentle than most people suppose

4. The passage shows us that many people believe　　　　　 .

A. only what they see　　　　　　　　　　　 B. what they are sure is true

C. only what they hear　　　　　　　　　　　 D. what they find interesting