82．Who loaded the old man’s shotgun? (no more than 2 words)

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81．Who shot Ronald Opus? (no more than 2 words)

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70. According to the passage, what will scientists most probably do in the future?

A. They will try their best to decrease noise.

B. They will work hard to cut down noise pollution.

C. They will study the effect of different noises.

D. They will protect animals from harmful noises.

PART FOUR WRITING

SECTION A

　　 Directions: Read the following passage. Complete the diagram/Fill in the numbered blanks by using the information for the passage. Write NOT MORE THAN 3 WORDS for each answer.

Lead poisoning (铅中毒)happens when lead is present in high levels in the blood of a person. It is one of the most common medical problems found in children. And it’s important to recognize the presence of lead in children’s bodies because lead is very harmful.

Children often go around and put things in their mouths like paint peelings. This is one of the main causes of lead poisoning. It has also been found that children born in poor families have higher chances of getting exposed to lead.

Some of the common symptoms of lead poisoning in children are headaches, stomach pains, hair loss, muscle weakness, and weight loss, etc.

Lead poisoning can have bad effects and can lead to heart diseases, kidney diseases and neurological(神经系统的)problems. It can also result in mental dullness and a low I . Q. level. There have been cases where lead poisoning proved to be terminal for children.

It’s difficult to easily recognize whether a child is affected by lead poisoning, as the symptoms of this disease can occur due to some other medical problems. Therefore, children under the age of 6 should regularly be checked to know the level of lead in their blood through blood tests. It’s possible to completely cure a child with lead poisoning through treatment. Usually the oral medicine chelator(螯合剂)is given to the children. Sometimes, children are given an injection(注射)for reducing the lead level. Children who have very high level of lead in their blood would need treatment for a long period of time and would also be put on a special diet.

Parents have to take certain precautions(预防) to lower the chance of lead poisoning in children. Cleaning the house regularly and removing shoes at the door after coming in form outside will prevent the lead particles from entering the house. Children should be put on a healthy diet, containing high proportions(比例)of calcium and iron, such as eggs, milk, fruits, potatoes, etc.Which helps to keep the lead levels in control, in the children’s bodies.

In short, it’s a must to be cautious and careful, and protect your children from the horrible results of lead poisoning.

　　 Lead Poisoning in Children

SECTION B

Directions: Read the following passage. Answer the questions according to the information given in the passage and the required words limit. Write your answers on your answer sheet.

Facts are sometimes more unusual than fiction. The following case makes Agatha Christie’s plot look like children’s literature.

The medical inspection of Ronald Opus’s body showed that he died from a shot gun wound of the head. He had jumped from the top of a ten-storey building intending to commit suicide(自杀). As he fell past the ninth floor, a shotgun blast through a window killed him immediately. Neither the shooter nor Opus knew that a safety net had been put up at the eighth floor level to protect some window washers and that Opus would not have been able to complete his suicide anyway because of this.

　　　 In the room on the ninth floor where the shotgun blast went through　 an elderly man and his wife were arguing and he was threatening her with the shotgun. He was so upset that when he pulled the trigger(扳机), he completely missed his wife and the pellets(小子弹) went through the window, striking the falling Opus.

　　　 The old man said it was his long-term habit to threaten his wife with the unloaded shotgun. He had no intention to murder her. Therefore, the killing of Opus seemed to be an accident. That is, the gun had been accidentally loaded.

　　　 The continuing investigation(调查) turned up a witness who saw the old couple’s son loading the shotgun six weeks before the fatal incident. It turned out that the old lady had cut off his son’s financial(经济的) support and the son, knowing the habit of his father to use the shotgun threateningly against his mother, loaded the gun with the expectation that his father would shoot his mother.

　　　 Further investigation showed that the son had become increasingly depressed over the failure of his attempt to engineer(密谋策划) his mother’s murder. This led him to jump off the ten-storey building, only to be killed by a shotgun blast through a ninth floor window.

　　　 The case was closed as a suicide.

69. We can know from the passage that many researchers think that the noise limit of one hundred twenty decibels would _____.

A. prevent them from doing their research work

B. benefit them a lot in their research work

C. do good to their health

D. increase the industrial output

68. As to the influence of noises on whales, which of the following statements is true?

A. They are deaf to noises.

B. Noises at a certain level may hurt them.

C. They are easily confused by noises.

D. Noises will limit their ability to reproduce.

67. Which of the following is discussed in the third paragraph?

A. Different places with different types of noises.

B. The very human ears sensitive to all types of noises.

C. The same noise measured differently on land and in the ocean.

D. The ocean animals' reaction to noises.

66. According to the passage, which of the following is increasingly dangerous to sea creatures?

A. The man-made noises. 　　　　　　　　 B. The noises made by themselves.

C. The sound of earthquakes. 　　　　　 D. The sound of the ice-breaking.

65.“But we stuck with it”(in Paragraph 3)means ______.

　 A. they felt discouraged

　 B. they carried on with it

　 C. they failed in their attempt

D. they made some progress

　　　　　　　　　　 　　　　　　　C

Some scientists say that animals in the oceans are increasingly threatened by noise pollution caused by human beings.

The noise that affects sea creatures comes from a number of human activities. It is caused mainly by industrial underwater explosions, ocean drilling, and ship engines. Such noises are added to natural sounds. These sounds include the breaking of ice fields, underwater earthquakes, and sounds made by animals themselves.

Decibels (分贝) measured in water are different from those measured on land. A noise of one hundred and twenty decibels on land causes pain to human ears. In water, a decibel level of one hundred and ninety-five would have the same effect.

Some scientists have proposed setting a noise limit of one hundred and twenty decibels in oceans. They have observed that noises at that level can frighten and confuse whales.

A team of American and Canadian scientists discovered that louder noises can seriously injure some animals. The research team found that powerful underwater explosions were causing whales in the area to lose their hearing. This seriously affected the whales' ability to exchange information and find their way. Some of the whales even died. The explosions had caused their ears to bleed and become infected.

Many researchers whose work depends on ocean sounds are against a limit of one hundred and twenty decibels. They say such a limit would mean an end to important industrial and scientific research.

Scientists do not know how much and what kinds of noises are harmful to ocean animals. However, many scientists suspect that noise is a greater danger than they believed. They want to prevent noises from harming creatures in the ocean.

64. Dr. Marcy thinks that life may exist in the 55 Cancri system because ______.

　 A. he has found the system similar to the solar system

　 B. he has discovered an Earth-like planet there

　 C. he has discovered a rocky planet there

　 D. he has found signs of life in the system

63. How many planets orbiting other stars have the two scientists discovered so far?

　 A. 100　　　　　　 　　 B. 69　　　　　　　　　　 C. 66　　　　　　　　　 　　 D. 65