Some scientists have suggested that it might in some cases be ethically(倫理的) acceptable to clone existing people. One possibility is generating replacement for a dying relative. All such possibilities, however, raise the concern that the clone would be treated as less than a complete individual, because he or she would likely suffer from limitations and expectations based on the family’s knowledge of the genetic “twin.” Those expectations might be false, because human personality is only partly determined by genes. The clone of an extrovert(性格外向的人) could have a quite different way of behavior. Clones of athletes, movie stars, or scientists might well choose different careers because of chance events in early life.

       Some people have also put forward the belief that couples in which one member is infertile (不生育)might choose to make a copy of one or the other partner. But society ought to be concerned that a couple might not treat naturally a child who is a copy of just one of them. Because other methods are available for the treatment of all known types of infertility, the traditional choice seems more appropriate. None of the suggested uses of cloning for making copies of existing people is ethically acceptable to my way of thinking, because they are not in the interests of the resulting child. It should go without saying that I am strongly opposed to allowing cloned human embryos(胚胎) to develop so that they can be tissue donors.

       In spite of this, it seems clear that cloning from cultured(人工培育的) cells will offer important medical opportunities. Predictions about new technologies are often wrong: societal attitudes change; unexpected developments occur. Time will tell. But biomedical researchers looking into the potential of cloning now have plenty to do.

66．What is the author’s concern about cloning an existing person?

       A．The clone created will have one defect（缺陷）or another.

       B．The clone created will be mistreated.

       C．The clone created is unlikely to fulfill your expectations.

       D．The clone created is ethically unacceptable.

67．It can be inferred from the text that a clone will _________.

       A．choose the same career as the person it is created from

       B．behave in the same way as the person it is created from

       C．share the same characteristics with the person it is created from

       D．be partly similar in personality to the person it is created from

68．According to the passage, one’s personality is determined by ___________.

       A．their genes

       B．the environment they live in

       C．both their genes and the environment they live in

       D．neither their genes nor the environment they live in

69．In the author’s view, which of the following uses of cloning is reasonable?

       A．To replace a lost relative.

       B．To help childless couples to have a baby.

       C．To develop tissue donors.

       D．To culture cells for medical purpose.

70．What is the author’s attitude towards cloning technology?

       A．It should be condemned.

       B．It has medical potential for scientists to explore.

       C．It should wait till people’s views change.

       D．It was unethical from the very beginning.

       It’s impolite to spit out the first bite of your dinner. But to a type of Australian snake, this rude behavior is a matter of life and death.

       The snake, called a floodplain death adder(蝰蛇), eats two types of frogs that are hard to stomach. The frogs produce chemicals to defend them from predators（獵食者）.

       One of these species, the Dahl's frog, can kill a snake that tries to eat it. The other species, the marbled frog, is less dangerous but still tough to eat. When attacked, it produces a glue like substance. Leaves and branches get caught up in this material, making a big sticky mess that gets in the way of anything trying to swallow it. A marbled frog can even get stuck on the head of an attacking snake.

       Both frogs have good defense methods. But the floodplain death adder knows how to get around each of them.

       Floodplain death adders quickly strike these frogs, using their poisonous teeth to inject poison. But then, instead of swallowing their dinner immediately, the snakes sit back and wait for their preys to become safe to eat. That's because both the Dahl's frog's protective toxin(毒素) and the marbled frog's glue break down over time. After a while, the frog toxin is no longer poisonous and the glue is no longer sticky.

       The two substances break down at different rates, and floodplain death adders seem to know the difference, And adder waits for a different length of time depending on the species of frog it just struck.

       The stickiness of the marbled frog glue decreased by as much as two-thirds after just 10 minutes. And that's just about how long an adder waits before eating a marbled frog.

       On the other hand, the snakes wait for about 40 minutes before eating a Dahl's frog. That's enough time for the frog's toxin to break down into harmless substances.

       But even a quick strike gives a taste of the Dahl frog's toxin. After striking such a frog, a floodplain death adder thrashes(翻騰) around and lies on its back with its mouth open, It's like the snake has just had a mouthful of chili pepper.

      By comparison, when given frogs that have no chemical defenses, floodplain death adders eat their prey immediately after striking. Snakes, despite the fact that they’ve got this tiny pea-size  brain are clearly capable of recognizing what kind of frog they’ve bitten.

61．What’s the best title of the passage?

       A．A dangerous meal

       B．A snake――floodplain death adder

       C．Two types of frogs――Dahl’s Frog and Marbled Frog

       D．The method  of killing frogs

62．The underlined word “it” in the 3^rd paragraph refers to the        .

       A．marbled frog                                       B．Dahl’s frog

       C．floodplain death adder                          D．glue

63．The glue produced by the marbled frog is used for               .

       A．sticking the snake’s head

       B．making a safe place to live in

       C．preventing anything from tying to attack it

       D．killing an attacking snake

64．From the passage we can conclude that           .

A．the Dahl’s frog carries enough poison to kill a snake but only if the snake eats it immediately

       B．the floodplain death adders only eat the Dahl’s frog and Marbled frog

       C．a(chǎn)lthough the snakes have tiny pea size brain , they are cleverer than human beings

       D．both the Dahl’s frog and the marbled frog protect themselves by producing toxin

65．What’s the floodplain death adder’s method to make the frogs safe to eat ?

       A．They thrash around with their mouths open

       B．They sit back and wait for their preys to become safe to eat

       C．They inject poison on the preys and wait for the breaking down of their toxin and glue before eating them

       D．They quickly strike these frogs

       Consumers at the Whale Inside Dark Restaurant are led by a waiter with night vision Goggles(夜視鏡). Inside Dark Restaurant in Beijing, a table of 30 diners was getting quarrelsome. “I’m touching your head!”said one, like a talkative child. “Who just said that?”another replied. Such voices floated across the 90-plus-seat restaurant, but no one could see who was talking, except the waiters, who were equipped with military-grade night-vision goggles.

       In the new conceptual dining, restaurants are turning off the lights to focus attention on the food. The trend seems to have started in Zurich and has since spread all over the world, with diners sitting in unlit rooms and, lately, being served by waiters in night-vision goggles. The idea is that by depriving(剝奪) one sense (sight), other senses are heightened.

       Darkness has other benefits. ''Chinese people tend to be shy,'' said Chen Long, who owns Whale Inside Dark, which opened in January. ''People have found it easy to break the ice here.''

       The first dark restaurant, which opened in Zurich in 1999, had a simple intention. The goal ''was creating jobs for the blind and handicapped people,'' said the manager. The concept has been popular in Paris, London, Sydney and elsewhere, offering new variations on sight deprivation, by which people can experience a lot in a completely dark condition.

       In Beijing, the Whale Inside Dark Restaurant is not only about heightening the sense of taste, but lowering social inhibitions(壓抑). It is popular with Internet daters, who met on matchmaking Web sites that are spreading throughout China. Diner for two is about 225 yuan, or $29 at 7.76 yuan to the dollar.

       Eating in the dark is not without its troubles. Instead of family-style dining, food is served on single-serving plates. When each dish arrives, the server guides your hand to the plate and offers helpful tips like, ''This course is eaten with a spoon.''

       The style seems to be working . ''People feel a lot more comfortable when they can't be seen by others,'' said Mr. Chen, who is opening a second branch in Shang-hai, ''Couples get to know each other without seeing other's faces.''

56．What’s the best title of the passage?

       A．The fun in the dark restaurant

       B．Dining in the dark

       C．The troubles in the dark restaurant

       D．The advantages in the dark restaurant

57．The advantages of the dark restaurant include the following except       .

       A．lowering social inhibitions

       B．heightening the sense of taste

       C．breaking the ice easily for some shy persons

       D．becoming an Internet daters’ centre

58．What does the underlined word “unlit”mean in the second paragraph?

       A．dark                    B．crowded              C．quiet                   D．colorful

59．It is implied but not stated that           .

       A．only Internet daters like to eat in the dark restaurant

       B．people can understand the blind people’s world better after visiting the dark restaurant

       C．only the waiters with military grade night vision goggles can see what happens there

       D．consumers are easy to get angry in the dark restaurant

60．Which of the following is true according to the passage?

       A．Consumers go to the dark restaurant in order to focus their attention on the food.

       B．Eating in the dark is fun and has some advantages as well.

       C．The waiters working in the dark restaurant have got used to the dark environment.

       D．In the dark restaurant, you can still have the dinner as in your family.

 While in the army there was nothing I dislike so much as the map reading course, for the simple reason  36   I always feel lost even with a map in my hand. For weeks I had   37  awake at night thinking of the practical  38   I would have to face at the end of the course. At last, the evil day arrived. It was my responsibility to   39    a small band of soldiers back to camp from the middle of  40  .We were driven out in a closed lorry and  41   in a ploughed field with  42  to get back to camp as quickly as possible.

    Well knowing my weakness, the soldiers smiled as they saw me  43   the map and they made a11 sorts of helpful suggestions. I folded the map up，put it in my pocket，and said that we would  44  east. After walking through the cornfield for over an hour we came to a wide stream. I looked at the map   45  . It seemed to be  46  with masses of thin blue lines. But which particular line was this  47  ? In despair，we sat down in the cool  48  and I feel 1ike  49  the map into the water. Fifteen minutes later，a boat passed and I asked the boatman if he could give us a  50  to the nearest village. I  51  that we had been out for a walk and somehow got  52  . The boatman invited us   53  and I felt  54  when he told me that he had helped hundreds of soldiers to pass their map - reading test! Not long afterwards, we  55   that boat and，following the boatman’s instructions, took a bus into the village and get back to camp.

       the weather, the sports meet will be held on time.

       A．Instead of            B．In relation to       C．Regardless of       D．In favor of

―How was your job interview?

―Oh, I couldn’t feel       . I hardly found proper answers to most of the questions they asked.

       A．better                  B．easier                  C．worse                 D．happier

Generally speaking,           according to the directions, the drug has no side effect.

       A．when taking         B．when taken          C．when to take        D．when to be taken

This book is said to be a special one, which        many events not found in other history books.

       A．writes                 B．covers                 C．prints                  D．reads

The murderer tried to run away from the prison but he       getting arrested by the police.

       A．ended up             B．broke up              C．started up            D．cut up

―Alice, you look puzzled. Have you understood it?

―Yes, I          another problem just now.

       A．have thought of    B．thought of           C．was thinking of    D．had thought of