Millions of youngsters across Europe could suffer permanent hearing loss after five years if they listen to MP3 players at too high a volume for more than five hours a week, EU scientists warned.
The scientists’ study, requested by the European Commission, attacked the concept of “leisure noise,” saying children and teenagers should be protected from increasingly high sound levels---with loud mobile phones also coming in for criticism（批评）.
“There has been increasing concern about exposure from the new generation of personal music players which can reproduce sounds at very high volumes without loss of quality,” the Commission, the EU’s executive arm, said in a statement.
“Risk for hearing damage depends on sound level and exposure time,” it said. More and more young people were exposed to the great threat(威胁)that leisure noise posed to hearing, it said.
Commission experts said that between 50 and 100 million people listen to portable music players on a daily basis.
If they listened for only five hours a week at more than 89 decibels(分贝), they would already be beyond   EU limits for noise allowed in the workplace, they said. But if they listened for longer periods, they risked permanent hearing loss after five years.
The scientists calculated the number of people in that risk category at between five and 10 percent of listeners, meaning up to 10 million people in the European Union.
Sales of personal music players have soared in EU countries in recent years, particularly of MP3 players.
"I am worried that so many young people ... who are frequent users of personal music players and mobile phones at high acoustic levels, may be unknowingly damaging their hearing ," she said in the statement.
【小题1】Which of the following can be the best title of the article?

Millions of Americans return from long-distance trips by air, but their luggage doesn’t always come home with them. Airline identification tags（标签） can come loose, and the bags go who-knows-where. And passengers leave all kinds of things on planes.
The airlines collect the items and, for 90 days, attempt to find their owners. They don’t keep them, since they’re not in the warehouse business. And by law, they cannot sell the bags, because the airlines might be tempted to deliberately misplace luggage.
So once insurance companies have paid for lost bags and their contents, and they no longer belong to passengers, a unique store in the little town of Scottsboro, Alabama, buys them. The “Unclaimed Baggage Center,” is so popular that the building, which is set up like a department store, is the number-one tourist attraction in all of Alabama. More than one million visitors stop in each year and take one of the store’s shopping carts on a hunt for treasures.
Each day, clerks bring out 7,000 new items, and veteran（老练的）shoppers rush to paw over them. You can find everything from precious jewels to hockey sticks, best-selling novels, leather jackets, tape recorders, surfboards, even half -used tubes of toothpaste.
The store’s own laundry washes or cleans all the clothes found in luggage, then sells them. The Unclaimed Baggage Center has found guns, illegal drugs and even a live rattlesnake.
The store has a little museum where some of its most unusual acquisitions（获得物） have been preserved. They include highland bagpipes, a burial mask from an Egyptian pharaoh's tomb, and a medieval suit of armor.
Statistics indicate that less than one-half of one percent of luggage checked on U.S. carriers is permanently lost and available to the store.
【小题1】Paragraph1 shows that many passengers lose their luggage because______.

Millions of Americans return from long-distance trips by air, but their luggage doesn’t always come home with them. Airline identification tags（标签） can come loose, and the bags go who-knows-where. And passengers leave all kinds of things on planes.

The airlines collect the items and, for 90 days, attempt to find their owners. They don’t keep them, since they’re not in the warehouse business. And by law, they cannot sell the bags, because the airlines might be tempted to deliberately misplace luggage.

So once insurance companies have paid for lost bags and their contents, and they no longer belong to passengers, a unique store in the little town of Scottsboro, Alabama, buys them. The “Unclaimed Baggage Center,” is so popular that the building, which is set up like a department store, is the number-one tourist attraction in all of Alabama. More than one million visitors stop in each year and take one of the store’s shopping carts on a hunt for treasures.

Each day, clerks bring out 7,000 new items, and veteran（老练的）shoppers rush to paw over them. You can find everything from precious jewels to hockey sticks, best-selling novels, leather jackets, tape recorders, surfboards, even half -used tubes of toothpaste.

The store’s own laundry washes or cleans all the clothes found in luggage, then sells them. The Unclaimed Baggage Center has found guns, illegal drugs and even a live rattlesnake.

The store has a little museum where some of its most unusual acquisitions（获得物） have been preserved. They include highland bagpipes, a burial mask from an Egyptian pharaoh's tomb, and a medieval suit of armor.

Statistics indicate that less than one-half of one percent of luggage checked on U.S. carriers is permanently lost and available to the store.

1.Paragraph1 shows that many passengers lose their luggage because______.

A．they are forgetful

B．the owners of some luggage can’t be identified

C．they are in a hurry

D．there is no lost and foundoffice in many airports

2.The reason why the airlines cannot sell the bags is that ______.

A．they have to find the owners

B．they have to keep the bags as long as possible

C．some bags are expensive

D．they are likely to make a profit on the bags on purpose

3.The Unclaimed Baggage Center is very popular because______.

A．visitors may purchase something undervalued.

B．all thethings there are very cheap.

C．there's a large variety of goods.

D．visitors will enjoy some amusing activities there.

4.What can we infer from the passage?

A．A little museum will keep all the precious unclaimed baggage.

B．The things in the Unclaimed Baggage Center are articles for daily use.

C．The percentage of passengers who lose their baggage for ever is small.

D．People are not allowed to buy the illegal things in the store.

5.What is the main purpose of the passage?

A．To introduce an attractive place to tourists.

B．To remind passengers of taking care of their baggage.

C．To advise the airlines to find the owners of the unclaimed baggage.

D．To introduce how the unclaimed baggage in the airports is handled in America.

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 only ______on the earth.

2.One reason why dinosaurs died out is that______.

3.One more reason may be that ______.

4.We can see from this passage ______.

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(想像)

C. rocks and forests

D. dinosaurs eggs