The little hero prefers to die rather than surrender.（英译中)

ealth officials noticed the first cases.Within a few years it was clear that it has now killed almost 14 million people around the world.

Four years ago doctors came up with the first treatment to make a dent in the spiraling death rate.Today that treatment works for some patients, but it’s not clear how long results will last.And still there is no cure.

For the nearly 35 million people around the world now living with HIV, there may never be a cure.Once cells are infected with HIV, it is very difficult — perhaps impossible ―to rid them of the virus.The only sure way to stop AIDS is to prevent infection in the first place, and only a vaccine can do that.

Unfortunately HIV is one of the most changeable viruses known to science.After more than a dozen years, it is still rather difficult to produce effective vaccine.

Still the billions of dollars spent on AIDS research over the past 20 years has not been wasted.As scientists learn more about how HIV survives in the human body, they are realizing that drugs alone may not be enough.To contain the virus effectively, it may take a balance between drug treatments that can keep HIV levels low and a strengthened immune system that can then target and destroy the remaining virus.Until scientists find a vaccine, however, they may control but never cure the century’s final scourge.

46.AIDS didn’t exist fifteen years ago.

47.Scientists have found a vaccine which can prevent HIV infection.

48.Although some treatment works for some patients with HIV, there is still no cure.

49.HIV is a changeable virus so that it is very difficult to produce effective vaccine.

50.We have wasted billions of dollars on AIDS research.

healthy? Different people may give different answers to this question.In my opinion, it is essential to do 37 .

First, it is absolutely necessary to take some exercise every day.Research shows that getting 38 of exercise makes the heart beat faster and the lungs work harder.This strengthens the heart, reduces the chance of heart 39 , and helps lower blood pressure.That’s 40 more and more people are becoming active in various kinds of sports and exercises.Every morning many people get up early and 41 much exercise.Some practice Tai Ji Quan and swordplay while others run, jog, walk or dance to musi

C.In the afternoon, there are also many people keen 42 sports.Some play basketball or volleyball or table tennis, others go in for gymnastics or track events.Through sports and exercises, people become healthier and stronger.

Medical researchers have proved that 43 people eat affects their health.They advise people to eat more fruits and vegetables and less meat such as beef and pork because meat contains more fat than poultry and fish.Fat can build 44 in the arteries, block the flow of blood, and cause a heart attack or stroke.

Getting rid of bad habits like smoking and drinking alcohol is also an important way to keep healthy.Smoking and drinking alcohol injure one’s health a great deal, and therefore should be given up.45 few people follow this advice.

If people follow these three ways of keeping fit, they can greatly improve their health.

36.A.over

B.of

C.about

D.for

37.A.the following

B.a following

C.that follows

D.as follows

38.A.plenty

B.a plenty

C.the plenty

D.plenties

39.A.attack

B.struggle

C.hit

D.strike

40.A.reason

B.why

C.whys

D.reasons

41.A.grasp

B.take

C.hold

D.carry

42.A.on

B.up

C.down

D.to

43.A./

B.this

C.what

D.that

44.A.on

B.down

C.up

D.over

45.A.Unfortunate

B.Fortunately

C.Fortunate

D.Unfortunately

ple feel that they are poor.And 37 if a person is poor he doesn’t feel really poor when he has a car.There are three main reasons the car became so 38 in the United States.First of all the country is a huge one and Americans like to move 39 in it.The car provides the most comfortable and cheapest form. of transportation.40 a car people can go any place without spending a lot of money.The second reason cars are popular is the fact that the United States never developed 41 and inexpensive form. of public transportation.Long-distance trains have never been 42 common in the United States as they are in other parts of the worl

D.Nowadays there is a good system of air-service provided by planes.But it is 43 expensive to be used frequently.The third reason is the most important one, though.The American spirit of independence is what really made cars popular.Americans don’t like to wait 44 a bus, or a train or even a plane.They don’t like to have to follow an exact schedule.A car gives them the freedom to schedule 45 time.And this is the freedom that Americans want most to have.

36.A.role

B.part

C.effect

D.basis

37.A.ever

B.still

C.even

D.quite

38.A.qualified

B.increasing

C.developing

D.popular

39.A.around

B.on

C.along

D.forth

40.A.Through

B.Since

C.With

D.As

41.A.an interested

B.an affected

C.an efficient

D.a satisfied

42.A.quite

B.very

C.too

D.as

43.A.very

B.so

C.too

D.as

44.A.for

B.on

C.beside

D.about

45.A.their own

B.theirs own

C.their

D.theirs

You are supposed to()carelessness, for it often leads to errors.

A.get rid of

B.get the rid of

C.get ride over

D.get ridden

He is very() with his money.

A.careless

B.worried

C.free

D.thoughtless

() his old age, he still went to his office on foot every day.

A.Because of

B.In spite of

C.Though

D.Despite of

All the parents worry about the() of TV on their children.

A.defect

B.result

C.effect

D.affect

When she opened the door, she found a boy ()in the snow, weeping.

A.lying

B.laying

C.lie

D.lay

Did you take() in the fighting yesterday?

A.the part

B.part

C.parts

D./

You should be out playing() working indoors.

A.instead

B.instead of

C.but

D.nothing but