Urban crowdedness would be greatly relieved if fares on public transport were more reasonable. A. offered B. spent C. paid D. charged 题目和参考答案——青夏教育精英家教网—

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Urban crowdedness would be greatly relieved if fares ______ on public transport were more reasonable.

A. offered B. spent C. paid D. charged

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71. .1962年他大学毕业后一直献身于教育工作。

He has ________ _________ ________ teaching since he_________ ________ the college in 1962.

72. 我宁愿考不及格，也不愿意考试作弊。

I ___________ ____________ fail ___________ _______________ in the examination.

73. 就他的能力而言，他是这个职位最好人选，但是他不够诚实。

_________ _________ _________ his ability is _________, he's the best person for the position, but he's not honest enough.

74. 你对你现在的工资满意吗？

Are you ___________ ___________ your present salary?

75. 我去他家，发现他的生活条件比我更差。

I went to his home and found his living condition was _____________ ____________than mine.

Some scientists say that animals in the ocean 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 suggested 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 loud 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 object to 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 noise from harming creatures in the ocean.

1.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

2. Which of the following is discussed in the second 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 animal’s reaction to noises.

3. 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

4. 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.

We know that many animals do not stay in one place. Birds, fish and other animals move from one place to another at a certain time. They move for different reasons: most of them move to find food more easily, but others move to get away from places that are too crowded.

When cold weather comes, many birds move to warmer places to find food. Some fishes give birth in warm water and move to cold water to feed. The most famous migration(迁移) is probably the migration of the fish, which is called the “salmon”. This fish is born in fresh water but it travels many miles to salt water. There it spends most of its life. When it is old, it returns to its birthplace in fresh water. Then it gives birth and dies there. In northern Europe, there is a kind of mice that leave their mountain homes when they become too crowded. They move down to the low land. Sometimes they move all the way to the seaside, and many of them are killed by falling into the sea.

Recently, scientists have studied the migration of a kind of lobsters(龙虾). Every year, when the season of bad weather arrives, lobsters get into a long line and start to walk across the floor of the ocean. Nobody knows why they do this, and nobody knows where they go.

So, sometimes we know why humans and animals move from one place to another, but at other times we don’t. Maybe living things just like to travel.

1. Most animals move from one place to another at a certain time to ____.

A give birth B enjoy a warm climate

C find food more easily D find beautiful places

2. The fish called “salmon” spends most of its time in ____.

A salt water B rivers C fresh water D its birthplace

3. A kind of mice in northern Europe move when ____.

A they give birth B the weather becomes bad

C there are too many of them in one place D they haven’t enough food

4. What is the main idea of the passage?

A Animals move in order to find food more easily

B The migration of the fish called “salmon” is the most famous migration

C Living things move from one place to another because they like to travel

D Sometimes we know why and how living things move from one place to another, but sometimes we don’t.

If you are lost in the mountains, stay calm in the face of darkness, loneliness, and the unknown. It will greatly increase your chances of survival(生存). Many people think that preparing necessary equipment and knowing how to use it are very important, but actually eighty percent of mountain survival is your reaction to fear.

Find a hiding place.

Unnecessary labor will make you sweat and make you cold. Find a hiding place around you before trying to start your own construction. If you are in a snow-covered area, you may be able to dig a cave in deep snow for protection from the wind. You should try to hide yourself in the middle of the mountain if possible. Stay out of the valleys ---cold air falls, and the valley floor can be the coldest area on the mountain.

Signal rescuers for help.

The best time to signal rescuers is during the day. Signal for help from the highest point possible--- it will be easier for rescuers to see you, and any sound you make will travel farther. If you take a box of matches and a space blanket (a special blanket for traveling), build three smoky fires and put your blanket --- gold side facing out--- on the ground.

Do not walk away.

It will make finding you more difficult, as search teams will be trying to follow your path and may miss you if you have gone off in a different direction. Searchers often end up finding a car with no one in it.

If you get frostbite(冻伤), do not rewarm the affected area until you’re out of danger.

You can walk on frostbitten feet, but once you warm the area and can feel the pain, you will not want to walk anywhere. Try to protect the frostbitten area and keep it dry until you are rescued.

1. When lost in the mountains, you can increase your chances of survival if you .

A. take a space blanket with you

B. do more physical labor

C. try to find a car immediately

D. walk as far as possible to find help

2. According to the passage, people most probably fail to survive if they _________.

A. do not take enough equipment

B. stay in the middle of the mountain

C. do not keep themselves warm

D. stay in a snow-covered area

3. What can we infer from the passage?

A. Don’t travel by yourself

B. Mountain traveling is dangerous

C. Don’t get frightened in danger.

D. Avoid going to unfamiliar place

The death of her dog made her sad, and it took a long time to it.

A. put off B. get down C. get over D. come across

We regret to inform you that the materials you ordered are ______.

a. out of work b. out of reach c. out of practice d. out of stock

．I don’t think it is going to rain the day after tomorrow, _______?

A．do I B．don’t I C．is it D．isn’t it

When the last prize had been awarded _____ everybody cleared off.

A. and B. so

C. or D. 不填

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