Damage to Ozone Layer Gets Worse

    In the middle of winter, when snow is falling in many parts of the United States, scientists have sounded a warning to people who plan to spend many hours in the sun this summer．The warning: The sun's summertime rays are more dangerous than once thought.

    A team of scientists from 80 nations recently reported to the United Nations that a layer of ozone（臭氧層）in the atmosphere, which protects humans from harmful levels of ultraviolet（紫外線）radiation, will be thinner over the United States this summer．The thinner layer allows more ultraviolet rays from the sun to reach Earth．The extra amount of ultraviolet radiation could cause an increase in the number of cases of skin cancer.

    Scientists first became concerned about the layer in the mid-1980s when a hole was discovered in the layer above Antarctica during the winter．The hole was caused in chemicals used in refrigerators and air conditioners．When these chemicals are sent out into the atmosphere, they produce gases that destroy the ozone.

    Concern about the protective ozone layer rose more recently when data from satellites and ground stations showed that ozone levels were dropping over areas other than Antarctica．Low ozone levels were recorded in the spring and summer over the United States and over other populated areas in the world.

    Although many countries have already begun stopping the use of ozone-destroying chemicals, the new findings are expected to advance the timetable for a total ban of the chemicals.

1.The scientists have observed the ozone layer ______．

    A．since 1980                     B．since last winter

    C．for more than 20 years            D．for about one year

2.The ozone layer in the atmosphere can ______.

    A．do a lot of good to human beings in many ways

    B．protect humans from diseases caused by bad weather

    C．do a lot of harm to human beings in the summer-time

    D．protect humans from harmful levels of ultraviolet radiation

3.Scientists first found that there was a hole in the ozone layer ______.

    A．a(chǎn)bove Arctic during the winter in the mid-1980s

    B．a(chǎn)bove Antarctica during the winter in the mid-1980s

    C．over somewhere in the north of the equator in 1980

    D．over the USA in the summertime in the mid-1980s

4.The damage to the ozone layer was caused by ______.

    A．the changeable weather          B．ozone-destroying chemicals

C．chemicals from refrigerators      D．chemicals from air conditioners

 

【答案】

 

1.C

2.D

3.B

4.B

【解析】略

 

練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目：高中英語(yǔ) 來(lái)源： 題型：閱讀理解

Every human being has a unique① arrangement of the skin on his fingers and this arrangement is unchangeable. Scientists and experts have proved the uniqueness of finger-prints and discovered that no exactly similar pattern is passed on from parents to children, though nobody knows why this is the case.

The ridge structure on a person’s fingers does not change with growth and is not affected by surface injuries. Burns, cuts and other damage to the outer part of the skin will be replaced in time by new one, which bears a reproduction of the original② pattern. It is only when the inner skin is injured that the arrangement will be destroyed. Some criminals make use of this fact to remove their own finger-prints but this is a dangerous and rare step to take.

Finger-prints can be made very easily with printer’s ink. They can by recorded easily. With special methods, identification③ can be achieved successfully within a short time. Because of the simplicity and economy of this system, finger-prints have often been used as a method of solving criminal case. A suspected man may deny a charge but this may be in vain. His finger-prints can prove who he is even if his appearance has been changed by age or accident.

When a suspect leaves finger-prints behind at the scene of a crime, they are difficult to detect with the naked eye. Special techniques are used to “develop” them. Some of the marks found are incomplete but identification is possible if a print of a quarter of an inch square can be obtained.

Notes:

unique  adj. 唯一的，獨(dú)特的

original  adj. 最初的，原始的

identification  n. 辯認(rèn)，鑒定

Scientists and experts have proved that the pattern of a human being’s finger skin ________.

A. is similar to his mother’s          

B. is valuable to himself only

C. is like that of others with the same type of blood

D. is different from that of all others

If your fingers are wounded by knife, fire or other means, the structure of skin will ________.

A. be changed partly                  B. be replaced by a different one

C. be the same when the wound is recovered      D. become ugly

Some criminals remove their own finger-prints by ________.

A. using printer’s ink           B. injuring the inner skin

C. damaging the outer skin       D. damaging the colour

Finger-prints have often been used as a method of solving criminal case because it ________.

A. is complicated but reliable     B. is simple and not expensive

C. is expensive but easy to do          D. can bring a lot of money

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：福建省福州市八縣（市）20092010學(xué)年度高一下學(xué)期期末聯(lián)考試題（英語(yǔ)） 題型：單項(xiàng)填空

.The typhoon(臺(tái)風(fēng)) left,___a lot of damage to the island where we live.

A．did

B．doing

C．to do

D．having done

 

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：湖南省、澧縣一中2010屆高三下學(xué)期第三次聯(lián)考試題（英語(yǔ)） 題型：其他題

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.

People working in places where large quantities of chemicals are involved, are more likely to suffer from chemical burns. Other incidents may occur at home through accidental misuse of products such as those used for hair, nails, skin, etc. A chemical skin burn is usually caused by acids like battery acid, toilet bowel cleaner, etc. Alkalis(堿) like paint removers are also responsible for chemical burns, and oxidants(氧化劑) also cause chemical burns when they come into contact with skin.

A chemical burn isn’t like an ordinary burn. No matter how harmless the burn is, it should be brought to a doctor’s attention. A chemical burn treatment has to be quick and isn’t something to be ignored as the burn may make the injury worse and cause undue damage to the skin.

The first step to treat chemical burns is to remove the victim from the accident area and also get rid of any clothes that may come into contact with the chemical causing the burn. Take care not to come into contact with the chemical.

Using large volumes of cool running water, wash the skin to get rid of the substance from the injured area. It is best to keep the injured area under cool, running water for about 20 minutes or more.

Do not use ice-cold water as it may further damage the skin. Alternatively, it is best to apply the cold compress(敷布) wrapped in a soft cloth soaked in cold water. Using this method every one hour for the whole day proves beneficial for the chemical burn treatment.

If you notice any sign of blisters(水泡) that has covered more than 3 inches in diameter of the skin, then it is time to call for immediate medical help. Any occurrence of unusual signs also requires medical help.

In extreme cases, the blood pressure and the heart rate of the victim may be affected to a critical extent. So intravenous fluid is administered to normalize the disturbed functions of the body. Intravenous process may also be required to administer certain medicines so as to prevent any infection or to reduce pain.

During the recuperation(康復(fù)) from the chemical burn, drinking plenty of water and fluids will help keep the body well hydrated. This helps a speedy recovery.

81. What can lead to a chemical burn frequently?(no more than 5 words)

______________________________________________________________________________

82. Why should a chemical burn be treated quickly? (no more than 11 words)

______________________________________________________________________________

83. What are the symptoms of a serious chemical burn according to the passage? (no more than 11 words)

______________________________________________________________________________

84. What is the passage mainly about?(no more than 8 words)

_____________________________________________________________________________

 

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：湖北省2010屆高三全真模擬英語(yǔ)試題 題型：閱讀理解

 

第三部分:閱讀理解(共20小題;每小題2分,滿分40分)

   閱讀下列短文，從每篇短文后所給各題的四個(gè)選項(xiàng) (A、B、C和D)中，選出最佳選項(xiàng)，并在答題卡上將該項(xiàng)涂黑。

         People living in the UK take quite a few holidays abroad and in this country each year．Choices made about where to go, how to get there and what to do while there can either benefit or harm the environment．

         While on holiday

         Many of the things you can do to be greener on holiday will be the same things you can do at home—but there are also some extra things too, like avoiding gifts made from endangered plants and animals．Here are some suggestions:

         ●Making the most of locally produced food and drink, and local activities and attractions will support people in the area you are visiting and reduce the need for further environmental influence from transport;

         ●Switching off any air conditioning, heating and lights will help reduce climate change effect;

         ●Save water—some countries suffer from water shortages and saving water can help avoid damage to our natural habitats （棲息地）.

Endangered species （物種）

         Some gifts and foods available in some countries can be made from endangered plants or animals．Check before you buy, but if you doubt, avoid animal and plant gifts．More details of the types of products to avoid and illegal trade hotspots can be found on the Souvenir Alert webpage．

         Making a positive contribution to the place you are visiting

         There are ways in which your holiday can help support local people and the environment;

         ●There are many opportunities to volunteer and help with projects that conserve and improve natural habitats;

         ●When you are away, or if you are looking for somewhere to visit, you can support projects or attractions which protect wildlife, such as nature reserves and conservation projects．

1. According to the passage, we can ________ to help reduce climate change effect

A．make good use of water

B．buy local food and drink

C．save electricity

D．go around on foot

2. We should check the gifts and foods before buying because ________．

A．sometimes they are of poor quality

B．they may not be typical local products

C．some of them will do harm to our health

D．they may be made from endangered animals or plants

3. We can infer from the passage that ________．

A．it is not easy for people to travel abroad

B．not everyone can tell an illegal souvenir

C．green holidays have been accepted by people

D．volunteer work is a must for protecting natural habitats

4．The passage is mainly about _________ .

A．travel dos and don'ts

B．the harm done to the environment

C．greener choices for holiday

D．tips on protecting endangered species

 

查看答案和解析>>

科目：高中英語(yǔ) 來(lái)源：2011-2012學(xué)年浙江省高三年級(jí)九月月考英語(yǔ)題 題型：閱讀理解

Many trees in the Brackham area were brought down in the terrible storms that March. The town itself lost two great lime trees from the former market square. The disappearance of such striking features had changed the appearance of the town centre entirely, to the annoyance of its more conservative inhabitants(居民).

Among the annoyed, under more normal circumstances, would have been Chief Inspector Douglas Pelham, head of the local police force. But at the height of that week's storm, when the wind brought down even the mature walnut tree in his garden, Pelham had in fact been in no fit state to notice. A large and healthy man, he had for the first time in his life been seriously ill with an attack of bronchitis.

When he first complained of an aching head and tightness in his chest, his wife, Molly, had tried to persuade him to go to the doctor. Convinced that the police force could not do without him, he had, as usual, ignored her and attempted to carry on working. Predictably, though he wouldn't have listened to anyone who tried to tell him so, this had the effect of fogging his memory and shortening his temper.

It was only when his colleague, Sergeant Lloyd, took the initiative and drove him to the doctor's door that he finally gave in. By that time, he didn't have the strength left to argue with her. In no time at all, she was taking him along to the chemist's to get his medicine and then home to his unsurprised wife who sent him straight to bed.

When Molly told him, on the Thursday morning, that the walnut tree had been brought down during the night, Pelham hadn’t been able to take it in. On Thursday evening, he had asked weakly about damage to the house, groaned(含糊不清地說(shuō)) thankfully when he heard there was none, and pulled the sheets over his head.

It wasn't until Saturday, when the medicine took effect, his temperature dropped and he got up, that he realised with a shock that the loss of the walnut tree had made a permanent difference to the appearance of the living-room. The Pelhams' large house stood in a sizeable garden. It had not come cheap, but even so Pelham had no regrets about buying it. The leafy garden had created an impression of privacy. Now, though, the storm had changed his outlook.

Previously, the view from the living-room had featured the handsome walnut tree. This had not darkened the room because there was also a window on the opposite wall, but it had provided interesting patterns of light and shade that hid the true state of the worn furniture that the family had brought with them from their previous house.

With the tree gone, the room seemed cruelly bright, its worn furnishings exposed in all their shabbiness. And the view from the window didn’t bear looking at. The tall house next door, previously hidden by the tree, was now there, dominating the outlook with its unattractive purple bricks and external pipes. It seemed to have a great many upstairs windows, all of them watching the Pelhams' every movement.

“Doesn’t it look terrible?” Pelham whispered to his wife.

But Molly, standing in the doorway, sounded more pleased than dismayed. “That's what I’ve been telling you ever since we came here. We have to buy a new sofa, whatever it costs.”

1.Why were some people in Brackham annoyed after the storm?

A. No market could be held.                 B. The police had done little to help.

C. The town looked different.               D. Fallen trees had not been removed.

2.In the third paragraph, what do we learn about Chief Inspector Pelham’s general attitude to his work?

A. He finds it extremely annoying.            B. Не is sure that he plays an important role.

C. Не considers the systems are not clear enough.

D. He does not trust the decisions made by his superiors.

3.What aspect of the Pelhams’ furniture does “shabbiness” in paragraph 8 describe?

A. its condition.             B. its colour.      C. its position.     D. its design.

4.As a result of the storm, the Pelhams’ living-room _____.

A. was pleasantly lighter                   B. felt less private

C. had a better view                        D. was in need of repair

5.Why did Molly sound pleased by her husband’s comment?

A. It proved that he was well again.        B. She agreed about the tree.

C. She thought he meant the sofa.           D. It was what she expected him to say.

 

查看答案和解析>>

同步練習(xí)冊(cè)答案