As clear from his manners, he is a teacher.A.beingB.isC.to beD.been 题目和参考答案——青夏教育精英家教网—

根据短文内容，从短文后的选项中选出能填入空白处的最佳选项，选项中有两项为多余选项。
In many parts of the world, cars play an important role in daily life and many societies would not exist without them. 1 But this is the prediction made by a team of transport researchers who are taken seriously, not only by government but also by car manufacturers.
The Human Science and Advanced Technology Institute at Loughborough in the UK is part of an international research program. 2 That will mean much saving, no accidents and better use of roads. The super-intelligent car in the future will drive itself. 3 Instead, we will have a choice of cars and change them as frequently as we change our clothing.
According to Dr. David Davis, who leads the research team, these predictions are based on the rising cost of the car culture, which had blocked up our cities, polluted our air, and caused more deaths than both world wars put together.
Davis says, cars will be fitted with some intelligent devices(装置) to regulate(调节) the distance between one car and another. 4 computers are much safer drivers than people, so cars in a road train will be able to drive much closer together than cars driven by people.
By 2010, Dr. David Davis believes, car technology will give motorists a clear view of the road, whatever the weather conditions, by projecting an image of the road ahead on to the car’s windscreen. 5 Cars will be connected by an electronic tow bar to the car in front to form “road-trains”. “The front vehicle in such a train burns the normal amount.” says Davis. “but all the others in the train would burn about ten percent of the normal amount, and so produce about ten percent of the pollution.”

E. So the idea that in 20 years’ time, no one will own cars may be hard to believe.
F. Every driver will use less fuel in the car he owns.
G. The car will automatically speed up, or slow down, to match the speed of the car in front.

A. Attention must be paid to environmental factors.

B. Principles of curing cancers.

C. It will take long to find perfect cures.

D. An important discovery in the research.

E. The causative factor of cancer is very clear.

F. The survival rate differs among patients with various cancers.

1.___________

“I have great confidence that by the end of the decade we’ll know in vast detail how cancer cells arise,” says microbiologist Robert Weinberg, an expert on cancer. “But,” he cautions, “some people have the idea that once one understands the causes, the cure will rapidly follow. Consider Pasteur. He discovered the causes of many kinds of infections, but it was fifty or sixty years before cures were available. ”

2.____________

This year, 50 percent of the 910,000 people who suffer from cancer will survive at least five years. In the year 2020, the National Cancer Institute estimates, that figure will be 75 percent. For some skin cancers, the five-year survival rate is as high as 90 percent. But other survival statistics are still discouraging—13 percent for lung cancer, and 2 percent for cancer of the pancreas (胰腺) .

3.___________

With as many as 120 varieties in existence, discovering how cancer works is not easy. The researchers made great progress in the early 1970s, when they discovered that oncogenes, which are cancer-causing genes, are inactive in normal cells. Anything from universe rays to radiation to diet may activate an inactive gene, but how remains unknown. If several oncogenes are driven into action, the cell, unable to turn them off, becomes cancerous.

4.____________

The exact process involved is still mysterious, but the likelihood that many cancers are initiated at the level of genes suggests that we will never prevent all cancers. “Changes are a normal part of the evolutionary process,” says oncologist William Hayward. Environmental factors can never be totally eliminated; as Hayward points out, “We can’t prepare a medicine against universe rays.”

5.____________

The prospects for cure, though still distant, are brighter. “First, we need to understand how the normal cell controls itself. Second, we have to determine whether there are a limited number of genes in cells, which are always responsible for at least part of the trouble. If we can understand how cancer works, we can reduce its action. ”

What to do when an earthquake happens？

If you are indoors, stay indoors unless you are in the ground floor where you can easily run outside. _71 Do not try to head for the stairway if you are living in an upper storey, as chances are that the stairways may fall down.

Stay away from windows, inside walls and movable furniture. 72 Don’t try to rush downstairs or outdoors while the building is shaking. There is greater danger of falling bricks, glass, or staircases falling down under your feet. 73 Stay away from high-rise buildings, trees, power and telephone cables or anything else that might fall on you.

If you are driving on the road, get out of the traffic and stop on a clear road. Do not stop on a bridge. 74 Before you continue driving, look out for fissures(裂缝), breaks in the road, bumps and cracks. Try to reach an open ground if you can.

Inside your home, be careful not to turn on the gas until you are sure the cylinder is safe and there is no gas leak. 75 You could be wasting lines needed for someone else’s emergency.

A. If you are outdoors, try to reach an open ground.

B. Try not to use your telephone unless there is an emergency.

C. Stay inside your car until the shaking stops.

D. Try to hide under a strong piece of furniture like a bed or desk.

E. Try to run out of the house as soon as possible.

F. The kitchen is a dangerous place as things stored in cupboards can fall on you.

G. Don’t forget to dial 911 for help.

How to Take Care of a Butterfly Cocoon

If you’re an elementary school science teacher or a mom of curious little kids, you might already know witnessing a caterpillar turning into a butterfly is one of the most awe-inspiring experiences that a young kid can have.

71 . Apart from letting your kids witness the change on themselves, it’s also a good idea to ground their experience with educational background. You could let the kids draw or take notes of their observations until the caterpillar finally transforms into a butterfly.

72　 . Caterpillars spin cocoons for themselves using a silk-like substance coming from their bodies. The caterpillar attaches this cocoon to a leaf or twig and wraps its body around it. That’s why it’s best that you provide a hanging stick or branch where the cocoon could be attached to. The best way is to have the caterpillar live on an indoor plant.

Do not disturb the cocoon. Once the insect is inside the cocoon, there’s actually nothing else that needs to be done. The best way is to let everybody know that nobody should touch the cocoon; the butterfly is being “formed” inside and if anybody disturbs it, chances are she won’t be able to be formed properly. 　73.

If the cocoon falls off its twig, don’t panic! The insect is still safe and it will still emerge as a butterfly soon enough. 　74. Don’t attempt to put it back to its original place.

Know when the butterfly will emerge from the cocoon. The insect usually stays inside the cocoon for 10 to 14 days. The day just before the butterfly emerges, the cocoon will turn either dark, or very clear. Expect the butterfly to come out in the early morning, and be sure to have your kids at hand to witness this event! 　75 .

Once the butterfly emerges and its wings become strong enough, the next part is to let her go out into the garden. Your kids will certainly appreciate the lesson on transformation, patience, and letting go. Good luck!

A．　 Know the process.

B．　 The best way is to leave it alone.

C．　 Help it come back to its place immediately.

D．　 This will happen very fast, so be ready.

E．　 Get it come out as quickly as possible.

F．　 It is a great opportunity to teach kids about patience.

G．　 Prepare the environment for the cocoon.

下面文章中有5处(第61～65题)需要添加小标题。请从以下选项(A、B、C、D、E和F)中选出符合各段意思的小标题。选项中有一项是多余选项。

A. Attention must be paid to environmental factors.

B. Principles of curing cancers.

C. It will take long to find perfect cures.

D. An important discovery in the research.

E. The causative factor of cancer is very clear.

F. The survival rate differs among patients with various cancers.

61. ____________

“I have great confidence that by the end of the decade we’ll know in vast detail how cancer cells arise,” says microbiologist Robert Weinberg, an expert on cancer. “But,” he cautions, “some people have the idea that once one understands the causes, the cure will rapidly follow. Consider Pasteur. He discovered the causes of many kinds of infections, but it was fifty or sixty years before cures were available. ”

62. ____________

This year, 50 percent of the 910,000 people who suffer from cancer will survive at least five years. In the year 2020, the National Cancer Institute estimates, that figure will be 75 percent. For some skin cancers, the five-year survival rate is as high as 90 percent. But other survival statistics are still discouraging—13 percent for lung cancer, and 2 percent for cancer of the pancreas (胰腺) .

63. ____________

With as many as 120 varieties in existence, discovering how cancer works is not easy. The researchers made great progress in the early 1970s, when they discovered that oncogenes, which are cancer-causing genes, are inactive in normal cells. Anything from universe rays to radiation to diet may activate an inactive gene, but how remains unknown. If several oncogenes are driven into action, the cell, unable to turn them off, becomes cancerous.

64. ____________

The exact process involved is still mysterious, but the likelihood that many cancers are initiated at the level of genes suggests that we will never prevent all cancers. “Changes are a normal part of the evolutionary process,” says oncologist William Hayward. Environmental factors can never be totally eliminated; as Hayward points out, “We can’t prepare a medicine against universe rays.”

65. ____________

The prospects for cure, though still distant, are brighter. “First, we need to understand how the normal cell controls itself. Second, we have to determine whether there are a limited number of genes in cells, which are always responsible for at least part of the trouble. If we can understand how cancer works, we can reduce its action. ”

As ________ clear from his manners, he is a teacher.

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