Very few scientists ______ with completely new answers to the world's problems.A.come toB.
Very few scientists ______ with completely new answers to the world's problems.
A.come to
B.come around
C.come up
D.come in
Very few scientists ______ with completely new answers to the world's problems.
A.come to
B.come around
C.come up
D.come in
Very few scientists ______ completely new answers to the world's problems.
A.come up with
B.come out
C.come round
D.come up to
Very few scientists ________ with completely new answers to the world's problems.
A.come to
B.come round
C.come on
D.come up
A、We didn't have a group of epidemiologists ready to go
B、The case reports came in on paper. It was very delayed before they were put online and they were extremely inaccurate.
C、We didn't have a medical team ready to go. We didn't have a way of preparing people.
D、There was only a few scientists there to look at treatment approaches.
If nuclear bombs are dropped on an area the survivors will
A.die gradually.
B.store more food.
C.be very sick.
D.grow more crops.
Which of your two hnds do you use more Very few of us cn use both hnds eqully well. MWhich of your two hnds do you use more Very few of us cn use both hnds eqully well. Most of usre right-hnded. Onlybout five people out of hundredre left-hnded. New-born bbies cn tke hold of things with either of their hnds, but. inbout two yers they usully use their right hnds. Scientists hve found tht monkeys like to use one of their hnds more thn the other, but it cn be either hnd. Thereres mny right-hnded monkeyss therere left-hnded ones. Next time when you visit zoo, you’ll see tht some of them will use their right hndsnd others will use their left hnds. But most of the people use their right hnds betternd this mkes life difficult for those left-hnded people. We live in right-hnded world. Most people ______.re left-hnded B.re right-hnded C.cn use both hnds eqully well D.never use left hnds
A.are left-handed
B.are right-handed
C.can use both hands equally well
D.never use left hands
It was surprising that ______.
A.the "explosion" caused a loud sound and a big fire
B.the "explosion" caused much damage to the forest
C.scientists didn't explore that area right after the explosion
D.people can't make out the cause of the explosion
SECTION B PASSAGES
Directions: In this section, you will hear several passages. Listen to the passages carefully and then answer the questions that follow.
听力原文: Various kinds of nuclear weapons have been produced in the past few years by many countries. This is a new and a terrible development in the history of man. Very few events can be more frightful than a nuclear war. In a nuclear war, most of the world's population will be exterminated. (15[C])The few living Creatures that survive will be exposed to radiation or to electrical rays harmful to life. It has been said by scientists that many new diseases will be caused by radiation. (16[B])There will also be an acute shortage of food, for all the crops and stores will be poisoned by radiation. Most of the areas on which nuclear bombs have been dropped will be ruined. (17[A])Therefore the survivors of a nuclear war will be sick, hungry and homeless. It might be better; perhaps, to be killed in a nuclear war than to survive it. It would be better still for men to learn to live in peace with one another. If this can be achieved there will be no nuclear wars.
If nuclear bombs are dropped on an area the survivors will ______.
A.hide in their houses
B.store more food
C.be very sick
D.grow more crops
听力原文: A few months ago, [32] a team of interviewers were sent to schools to find out why children are prejudiced against science. Their answer provided this surprising picture of a typical scientist: they thought [33] a scientist is a rather dull person who spends all day working in a laboratory, wearing a white coat and making things that smell bad. They thought that scientists usually aren't very interesting and don't talk about anything but science. They don't play games well and they aren't attractive to the opposite sex. They also did not realize that women are as capable of becoming scientists as men.
On the other hand, [34] an art graduate is seen as a much livelier person. Arts graduates are thought to have a better sense of humor, to be interested in sports and pop music and to be considered attractive. When you understand these misconceptions which children have, it is only logical that most of them want to study arts rather than science.
(33)
A.Scientists.
B.Art graduates.
C.Children.
D.Women.
听力原文: No one knows exactly why we sleep. But scientists have learned a lot about how we sleep, From sleep experiments, scientists have learned that there are four different stages of sleep.
When you first fall asleep, your heart starts to beat more slowly and your breathing slows down. If something wakes you, you might not think that you had been asleep. Some people call this kind of sleep dozing. Scientists call it Stage One sleep. Next, if you are not awakened, you drift into a deeper sleep. Your pulse and breathing become even slower than they were during Stage One sleep. But you can still be awakened quite easily. If you take a cat nap, you probably will not get any further than this stage of sleep, which is called Stage Two.
If you sleep longer than about twenty minutes, you go into the third stage of sleep. Your body is very relaxed. It would take a loud noise to wake you up.
You have probably heard of people who walk in their sleep. No one knows what makes people sleepwalk. But a person can sleepwalk only during Stage Four. This is the deepest kind of sleep. If someone wakes you up during stage four, you might feel very confused. It might take you a few minutes to get used to being awake.
(36)
A.Reasons for People's Sleeping.
B.Four Stages of Sleep.
C.Reasons for sleepwalking.
D.A Sleep Experiment.
(判断)AIDS, fifty years ago, didn’t exist.Fifteen years ago a few doctors and public health 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.
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