Have you ever imagined that you could be cloned(克隆) like Dolly, the sheep, in the not too distant future?
The news that a human embryo(胚胎) has been 16 cloned for the first time has caused mixed reactions(反应).
The 17 was carried out by scientists from the Advanced Cell Technology Inc(ACT), in Massachusetts, US. The group 18 the news on November 25.
This is 19 human being. A clone is alive, it walks, it breathes, said Jamie Grifo, a(n) 20 on the study of cloning at New York University School of Medicine.
“This is a set of cells in a lab that will be used to 21 someone’s life.”
Such research could lead to treatment for 22 such as heart disease, AIDS and even cancer, 23 scientists.
Despite high hopes from other scientists, the news raised concerns immediately from religious and political leaders. Several 24 in the US do not allow human cloning. President George W. Bush also made it clear that he is 25 any type of human cloning. However, the scientists at ACT said they have no interest at present in 26 an early embryo into 27 .
Animal have been cloned repeatedly since Dolly, the sheep 28 in 1997. And there were no real technical 29 to stand in the way of scientists making a cloned human embryo.
This time the research group used traditional cloning technology with a human 30 . 31 it was given DNA from an adult cell, the egg began to 32 . 33 it was stopped from becoming a baby-at a stage in which it was 34 a ball of cells. The 35 technology has been used to clone sheep , cattle and monkeys.
A.in failure B.never C.successfully D.not
A.research B.report C.works D.task
A.made known B.made C.said D.had
A.a cloned B.a man-made C.a D.not a cloned
A.worker B.head C.expert D.assistant
A.save B.rescue C.cure D.treat
A.patients B.health C.diseases D.things
A.according to B.including C.besides D.argued
A.countries B.nations C.peoples D.states
A.for B.against C.researching for D.praising
A.developing B.building C.inventing D.discovering
A.a baby B.a man C.a woman D.a white man
A.died B.appeared C.turned up D.was no more
A.questions B.affairs C.business D.problems
A.egg B.bless C.meat D.cell
A.Before B.After C.While D.And
A.grow B.die C.change D.grow up
A.And B.But C.However D.Yet
A.yet B.still C.not D./
A.different B.usual C.ordinary D.same
请先阅读下面短文,掌握其大意,然后从各小题所给的A、B、C、D四个选项中选出可以填入相应空白处的最佳选项,并在答题卷上将该项涂黑(共15小题;每小题分,共15分)
Most of us have three meals a day .We take food for granted(想当然)。And we don’t think about it. experts argue a food crisis(危机)is coming.This crisis is going to make us the way we think about food.
Food is in great need a growing of world population.By 1960,the population was three billion.It doubled to six billion by 1999.By 2050,this planet will need to at least nine billion people.As a result,the food prices get higher and higher.
So,what can a ,crowed world do?One suggestion is to eat __ meat.Meat uses more natural resources(资源)than grains(谷物) .It requires more __ to produce one pound of meat than to produce one pound of grain. It also requires between 5 and 10 times more than vegetables. So ,eating less meat will ___ more land for farming,and it will save water.
To eats less meat,people will need to change their eating habits. That will not be __ .Americans, for example,have __ loved meat. In general, They eat twice as much meat as people in other countries.At the same time,in developing countries like China and Brazil,sales of meat have doubled in the last 20 years. ___ will double again by 2050.Growing need of meat wil1 __ to put pressure on natural resources.
World population is increasing,resources are becoming fewer,and food prices are rising.Therefore, we need to rethink___ we eat every day. For meat lovers, we don’t need to give up meat ___ .But we need to eat more grains and less meat.
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完形填空。(共10小题,每小题1分,满分10分)
Once when Kevin was selling hats under a big tree, the monkeys on the tree picked some hats and put them on. So Kevin took off his own hat and threw , on the ground. The stupid monkeys threw their hats, too! Kevin soon all the hats and left happily.
Fifty years later, young Tony, of Kevin, also sold hats for a living. a long walk, Tony was tired, so he put his bag of hats beside him and laid down under a big tree. He was soon fast .
When he woke up, Tony found that there weren’t any hats in his bag! Tony started looking for his hats. To his , he found some monkeys on the tree wearing his hats.
Tony didn’t know what to do. Then he remembered the story his grandfather used to tell him. “Yes! I can fool these monkeys!” said Tony. “I’ll them imitate (模仿) me and very soon I will get all my hats back!”
Tony then waved at the monkeys, the monkeys waved at him. Tony started dancing, the monkeys were also dancing. Tony threw his hat on the ground…
Just then, one of the monkeys jumped down the tree, picked up the hat Tony threw on the ground and up to Tony. He said, “Do you think only you had a grandfather?”
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Few people like changing their habits, good or bad. Whether it is smoking, drinking or over-eating, they “enjoying” them to the end.
On every packet of cigarettes(香烟), people are warned against the of smoking: “Warning: Cigarette Smoking Is Dangerous to Your Health”. , millions of them start smoking or go on smoking. Why?
Facts show that families and surroundings(环境) play a very important part in ___ smokers. All those smokers come from smoking families or have smoking or relatives. Films and TV plays also play a part. People their “heroes” on TV drinking alcohol(酒) or smoking cigarettes. “Heroes” seem to fear , neither killing themselves nor killing others with alcohol and cigarettes. If they are not afraid of the harm of smoking and drinking, ___ should common people be afraid?
The simple warning on the cigarette packet does not influence smokers’ habits. Even ___ warnings, like showing pictures of smokers who have died of cancer, don’t seem to work.
Knowing and believing seem to be two __ things. If smoking is really as harmful as doctors say, it is time for smokers to think about it and try to give it up!
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The plane took off. A passenger needed a cup of water to take his medicine. An air hostess(空姐)told him that she would bring him the ___ soon. But the air hostess was ___ busy that she forgot to bring him the water. ____ , the passenger couldn’t take his medicine on time. About half an hour later, she hurried over to him with a cup of water, but he ___ it.
In the following hours, each time she ____ the passenger, she would ask him with a smile whether he needed help or not. But the passenger ___ paid notice to her.
When it was time to get off the ____ , the passenger asked her to hand him the passengers’ booklet(留言簿), she was very ___ . She thought that he would ___ bad words in it, but with a smile she handed it to him.
Off the plane, she opened the booklet and then ___ . The passenger put it, “In the past few hours, you have asked me whether I needed help or not for twelve times in all. How can I refuse your twelve faithful(真诚的)smiles?”
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完形填空(共10小题;每小题1分,满分10分)
Sitienei, a 90-year-old Kenyan grandmother, has become the world’s oldest primary school student. She is studying at the local primary school to learn to read and write. She is from a small _____ in Kenyan. She has spent most of her life ____ as a midwife(接生婆), helping women to give birth to babies. She wants to pass on her midwife skills to the young. She said she didn’t have a chance to go to school when she was ___ . So she wants all the children in her village to ____ .
The head teacher at the school said, “I’m proud ___ her. She is loved by every pupil. They all want to learn and play with ___ .” He also said, “She is doing well considering her __ . I can say I have seen a big difference in this school ___ she came.”
Sitienei often said, “I want to tell children, __ girls in poor areas, that ___ will be your wealth.” She added, “With education, you can be whatever you want to be --- a doctor, a teacher, a scientist, and so on.”
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