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cell technology. Some people are calling it the greatest medical breakthrough so far this century.
But what are stem cells? As we know, most cells in our bodies are designed____ -for example, a liver cell
develops to work in the liver and cannot become a heart cell. But stem cells are different. They are very young
and in the laboratory scientists can grow them into different types of cells.
Claudia Castillo needed a new windpipe (气管) after getting a serious disease. Scientists from the University
of Bristol took a donor windpipe, from someone who had recently died. They used strong chemicals to remove
the donor's cells, leaving a tissue scaffold (组 织支架). This was refilled with cells from Ms Castillo's windpipe and stem cells from her bone. After four days the cells had grown sufficiently for the windpipe to be
transplanted into Ms Castillo.
Currently, transplant patients have to take drugs for the rest of their lives to prevent their bodies rejecting
the new organs. These drugs can have bad side-effects, and do not always prevent rejec tion. But by using
Ms Castillo's own cells, doctors were able to trick her body into thinking the new windpipe was her own organ. Five months on, Claudia Castillo is in perfect health.
This ground-breaking procedure could be used in other trans- plant operations in the future. Scientists also
believe stem cells might be used to treat Parkinson's disease, heart disease, stroke, ar thritis, burns and so on.
However, stem cell research is extremely controversial. The most effective stem cells do not come from
adults but from embryos (胚胎) created in laboratories which are just a few days old. Many people have
religious or ethical objections to growing embryos, even if they can be used to cure diseases.
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2. Fill in the blank in Paragraph 2 with proper words. ( Please an swer within 8 words. )
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3. Which sentence in the text is the closest in meaning to the fol lowing one? However, Ms
Castillo's body mistook the new windpipe for her own because doctors put her own cells in it.
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4. What do you think of the stem cell transplant? Why? ( Please answer within 30 words. )
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5. Translate the underlined sentence in Paragraph 4 into Chinese.
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Getting paid to talk about the World Cup is a great job. I’m not a football commentator(评论员),though-just an English teacher in japan.
I came to japan two years ago, and didn't think I would stay, but japan has that effect on you. People after endup tiving bere longer than they planned. I think it’s best to teach in a biggest eity where there are onther foreigners to mix with. Rather than a small town where English teachers often complain of feeling like a goldfish in a bovd. Many people choose to live in Tokyo, of course, which is good for the nightlife factor. But I’d say that for geueral quality of living, cities of neither too large nor too small, like Sapporo where I live, are better choices.
I teach English privately, which means I’m my own boss. If you want to devote yourself to private teaching, it’s well worth doing a TEFL eourse first. Beeause your lessons will be much better for it. The problem with private teaching is finding students; it took me a year to build up a full schedule(日程表)of private lessons, so I started out teaching in schools part time.
Most of my foreign friends here work full-time for big English conversation schools. The salary is fine to live on. But whether you can save money depends on how much going out and traveling you do here.
The schools are reluetam to take time off -even teachers with tichets for the England-Argentina game had trouble getting the day off.
1.From the passage we know in japan the write likes to jive in_______.
A.Tokyo B.a small town
C.a city of middle site D.a bit city
2.According to the writer, one had better________first to do private teaching better.
A.take a TEFL course B.decide his or her own lessons
C.find students D.build up a full schedule
3.The underlined sentence in the second paragraph implies that_______.
A.there ar many foreigners in japan
B.Japan is good for nightlife
C.they can teach English privately in japan
D.japan has something more nuractive than expected
4.The underlined word“reluetant”in the passage may probably mean_____.
A.kind B.unwilling C.free D.careless
Cloze
Farmers, as we all know, have been having a hard time of it lately, and have turned to new ways of earning income from their land. This involves not only planting new kinds of crops, but some 1 ways of making money, the most unusual of which has got to be sheep racing. Yes, you heard me 2 ! A farmer now holds sheep races on a regular basis, and during the past year over 100,000 people have 3 to watch the race. “I was passing the farm on my way to the sea for a holiday.” one punter (赛马经纪人) told me, “and I thought I'd have a look. I didn't believe it was serious, to tell you the truth.” According to a regular visitor, betting on sheep is more interesting than betting on horses. “At proper horse races everyone has already studied the form of the horse 4 , and there are clear favourites. 5 nobody has heard anything about these 6 ! Most people find it difficult to tell one from another in any case.” I stayed to watch the races, and I must admit that I found it quite 7 . In a usual sheep race, half a dozen sheep race down hill over a course of about half a mile. Food is waiting for them ar the other end of the 8 just to give them some encouragement, I ought to add! The sheep run surprisingly fast. 9 they have probably not eaten for a while. Anyway, the crowd around me were obviously enjoying their day out at the races. 10 by their happy faces and the sense of excitement.
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