Millions of years ago dinosaurs (恐龙)lived on the earth. In the days of dinosaurs the whole earth was warm and wet. There were green forests and they could find enough to eat. Later, parts of the earth became cold and dry, and the forests there died. Then dinosaurs could not find enough to eat. This must be one reason why dinosaurs died out.

  We can guess another reason. New kinds of animals came on the earth. Some had big brains and were fast and strong. They could kill dinosaurs.

  There may be other reasons that we don’t know about yet. Scientists are trying to make more discoveries about dinosaurs.

  Dinosaurs were of many sizes and shapes(形状)。Some were as small as chickens, while some were about 90 feet long.

  There were also terrible fights between dinosaurs. They might have happened more than 100 million years ago. Though there was no man to see any of the fights, we can be told by the animal’s footprints(足迹)that fight did take place.

1．According to the passage, dinosaurs did exist (存在) only　　   on the earth.

A. for millions of years

B. millions of years ago

C. more than 100 million years ago

D. when it was warm and wet somewhere

2．One reason why dinosaurs died out is that　　   .

A. there were too many dinosaurs

B. parts of the earth became cold and dry

C. the dead forests there could not supply them with enough food

D. they couldn’t find enough to eat

3．One more reason may be that　　   .

A. new kinds of animals came on the earth

B. some fast and strong animals with big brains could kill them

C. some dinosaurs were as small as chickens

D. some big dinosaurs died in the fights

4．We can see from this passage　　   .

A. scientists are trying to make some dinosaurs

B. dinosaurs are dangerous enough

C. dinosaurs are worth studying

D. scientists know nothing about dinosaurs

5．That terrible fights can be explained by　　   .

A. footprints of the animals

B. imagination (想象)

C. rocks and forests

D. dinosaur’s eggs

完形填空

　　The Mullah couldn’t break his word. That would be 1 for an important person in the village. He certainly 2 to sell his donkey for a dollar. So he said,“ 3 me at the donkey fair(集市) on 4 . I shall sell her at that time. I shall 5 my donkey to the one who will treat her most 6 .”

　　Everybody was kind to animals in the village, So the Mullah 7 out a plan. He wanted to 8 his word and also to keep his donkey.

　　On the night before the donkey fair, the Mullah bought a piece of 9 . No one had any idea why the Mullah should want that.

　　On Saturday, man and boy in the village came to the donkey fair.

　　They found a 10 tied with a piece of rope 11 the tail of the Mullah’s donkey! Beside them stood the Mullah, who looked 12 .

　　“It is 13 , I’ll sell my donkey for a dollar,”said the Mullah,“Just one 14 , though. My donkey and my cat are very good friends. They must not be 15 . The kind man who 16 my donkey must buy my cat also.”

　　“How much is your cat?”asked many 17 .

　　“Oh, my cat is a very 18 animal,”said the Mullah.“Her father 19 a mouse for a king. Her mother caught a mouse for 20 . She is one of the finest cats. For such a great cat I want one hundred dollars.”

The man laughed, and gave up the idea of owning the donkey.

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(1) Mr. Brown (the motorist)
　　At about 9:20 p.m. on October 14th, I was driving along Market Road in the direction of Midwick. I wanted to go to Sturham to collect my wife, who had been visiting some friends. I prepared to turn into Sturham Road, which was on my right. In the distance, I saw the lights of a car moving towards me but it was a long way from me. I put out my hand to show that I was going to turn right. Then I started to turn slowly towards Sturham Road. Suddenly there was a loud noise on the passenger's (near) side of the car. I stopped the car and got out. A motorcycle had hit my car. The motorcyclist had been thrown over the car. He was injured, so I ran to a shop to phone for help.
　　(2) Mr. Smith (the injured motorcyclist)
　　On the evening of October 14th, I was going home along Market Road towards Newtown. I was riding my motorcycle. I was going slowly because some of the streetlights were out and the road was wet and slippery. Just before Sturham Road, a car suddenly drove right across my path. The driver did not flash his lights to give a warning. I could not turn in time, so I hit the side of the car. When I woke up, I was lying in a hospital in Market Road.
　　(3) Mr. Lee (another motorcyclist)
　　At about 9:10 p.m. on October 14th, I left my home in Midwick. Ten minutes later I was riding my motorcycle along Market Road. I was going to Newtown. There was a motorcycle about 40 metres in front of me. It was not going very quickly. The man on it was riding near the curb (路边) but I was near the center of the road. The motorcyclist in front of me tried to turn to his right but there was no time. He hit the car and was injured. There was no car going along in front of us or put by the road.
48．Which of these statements about the accident is probably correct?
　　A．Mr. Brown wrongly supposed that the lights of the two motorcycles were those of a car.
　　B．The lights of the car moving towards Mr. Brown made him unable to see.
　　C．Mr. Brown knocked down a motorcyclist on purpose.
　　D．The accident was caused by the carelessness of the first motorcyclist.
49．It seems probable from the statements that Mr. Brown__________.
　　A．gave no signal to show that he was turning right
　　B．did not give any signal until he was actually turning
　　C．failed to give a proper signal at that time
　　D．flashed his light to show that he was going to turn
50．We would expect to find that Mr. Brown's car was damaged on its________ side.
　　A．front    B．left    C．right    D．driver's

-Without proper planning, tourism can cause problems．For example, too many tourists can crowd public places that are also enjoyed by the inhabitants(居民) of a country. If tourists create too much traffic, the inhabitants become annoyed and unhappy. They begin to dislike tourists and to treat them impolitely. They forget how much tourism can help the country’s economy. It is important to think about the people of a destination(目的地) country and how tourism affects them. Tourism should help a country, keep the customs and beauty that attract tourists．Tourism should also advance the wealth and happiness of local inhabitants.
　　Too much tourism can be a problem. If tourism grows too quickly, people must leave other jobs to work in the tourism industry. This means that other parts of the country’s economy can suffer.
　　On the other hand, if there is not enough tourism，people can lose jobs. Businesses can also lose money. It costs a great deal of money to build large hotels, airports，air terminals, first－class roads, and other support facilities（设施）needed by tourist attractions. For example, a major international class tourism hotel can cost as much as 50 thousand dollars per room to build. If this room is not used most of the time, the owners of the hotel lose money.
　　Building a hotel is just a beginning．There must be many support facilities as well，including roads to get to the hotel, electricity, sewers to handle waste, and water. All of these support facilities cost money. If they are not used because there are not enough tourists, jobs and money are lost.
【小题1】Which of the following has most probably been discussed in the part that goes before this passage?