Recently there was a major discovery in the scientific research—the mapping of all DNA in a human gene（基因） is complete．Couple of years ago, this seems an impossible task for scientist to accomplish．All this progress in science leads us to believe that the day, when the human being will be cloned, is not far away．Human cloning has always been a topic of argument, in terms of morality or religion．
Taking a look at why cloning might be beneficial, among many cases, it is arguable that parents who are known to be at risk of passing a genetic limitation to a child could make use of cloning．If the clone was free of genetic limitations．then the other clone would be as well．The latter could foe inserted in the woman and allowed to ripen to term．Moreover, cloning would enable women, who can't get pregnant, to have children of their own．
Cloning humans would also mean that organs could be cloned, so it would be a source of perfect transfer organs．This, surely would be greatly beneficial to millions of unfortunate people around the world that are expected to lose their lives due to failure of single （or more） organ （s）．It is also arguable that a ban on cloning may be unlawful and would rob people of the right to reproduce and limit the freedom of scientists．
Arguments against cloning are also on a perfectly practical side．Primarily, I believe that cloning would step in the normal "cycle" of life．There would be a large number of same genes, which reduce the chances of improvement, and, in turn, development—the fundamental reason how living things naturally adapt to the ever-changing environment．Life processes failing to do so might result in untimely disappearance．Furthermore, cloning would make the uniqueness that each one of us possesses disappear．Thus, leading to creation of genetically engineered groups of people for specific purposes and, chances are, that those individuals would be regarded as "objects" rather than people in the society．
Scientists haven't 100 per cent．guaranteed that the first cloned humans will be normal．Thus this could result in introduction of additional limitations in the human "gene-pool"．
Regarding such arguable topics in "black or white" approach seems very innocent to me personally．We should rather try to look at all "shades" of it．I believe that cloning is only legal if its purpose is for cloning organs; not humans．Then we could regard this as for "saving life" instead of "creating life"．I believe cloning humans is morally and socially unacceptable．Which of the following is true according to the passage?
| A．Genetic limitation will be beneficial for some women |
| B．A large number of genes will prevent us from developing |
| C．Prohibition of cloning might limit the freedom of scientists |
| D．First cloned humans might be normal according to scientists |
What's the author's opinion on cloning?
| A．Cloning should be entirely banned． |
| B．Cloning should be used in creating life． |
| C．Cloning will take away the right to reproduce． |
| D．Cloning is acceptable if it is used for cloning organs． |
Where can you read this article?
| A．In a story book |
| B．In a magazine |
| C．In a science fiction |
| D．In a brochure |
Which of the following shows the structure of the passage?
The other day when I was passing a clothing store, I fell in love with a skirt. I knew it would suit me best at first sight. But when I looked at the price tag (标签), I knew I had to give it up.
The love for beautiful clothes has been planted in my heart the day when I was born to be a woman. Several years ago I read an article in a magazine. The article stated that when a woman is at her best time, she is usually poor or tasteless, so she can’t get the right clothes; when she can afford to buy the clothes she likes, she often finds that they do not suit her anymore.
On the way home, I was quite disturbed by such thoughts. It was just a pity, like many other pities. I thought to myself this way. But when I was about to enter the building where I was living, I saw the big mirror placed in the entrance. I saw a girl in it who was in cheap but cleanly washed sweater and jeans. She was rather young, healthy and energetic. For quite a while I was touched by what I had seen in the mirror.
Then I almost forgot the tale: A person without shoes cried until he saw a man without feet. Being young without good clothes is like the person without shoes. I should have felt grateful that I haven’t lost my feet.
How did the author feel when she decided not to buy the skirt?
| A．Embarrassed. | B．Wise. | C．Regretful. | D．Relieved. |
The underlined word “She” in Paragraph 3 refers to .
| A．the author’s friend | B．a stranger |
| C．the author’s roommate | D．the author |
Why was the author touched by what she saw in the mirror?
| A．She came to realize what she really possessed. |
| B．She was reminded of her devotion to beauty. |
| C．She didn’t feel at ease when looking into a mirror. |
| D．She never thought over the other side of a person. |
We can learn from the text that the author considered her love for beautiful clothes as .
| A．funny | B．natural | C．silly | D．simple |
The Basics of Math—Made Clear
Basic Math introduces students to the basic concepts of mathematics, as well as the fundamentals of more tricky areas. These 30 fantastic lectures are designed to provide students with an understanding of arithmetic(算数) and to prepare them for Algebra (代数) and beyond.
The lessons in Basic Math cover every basic aspect of arithmetic. They also look into exponents (指数), the order of operations, and square roots. In addition to learning how to perform various mathematical operations, students discover why these operations work, how a particular mathematical topic relates to other branches of mathematics, and how these operations can be used practically.
Basic Math starts from the relatively easier concepts and gradually moves on to the more troublesome ones, so as to allow for steady and sure understanding of the material by students. The lectures offer students the chance to “make sense” of mathematical knowledge that may have seemed so frightening. They also help students prepare for college mathematics and overcome their anxiety about this amazing — and completely understandable — field of study.
By the conclusion of the course, students will have improved their understanding of basic math. They will be able to clear away the mystery (神秘性) of mathematics and face their studies with more confidence than they ever imagined. In addition, they will strengthen their ability to accept new and exciting mathematical challenges.
Professor H. Siegel, honored by Kentucky Educational Television as “the best math teacher in America,” is a devoted teacher and has a gift for explaining mathematical concepts in ways that make them seem clear and obvious. From the basic concrete ideas to the more abstract problems, he is a master in making math lectures learner-friendlier and less scary.
With a PhD in Mathematics Education from Georgia State University, Dr. Siegel teaches mathematics at Central Arizona College. His courses include various make-up classes and a number of lectures for future primary school teachers.
If the course fails to provide complete satisfaction to you, you can easily exchange it for any other course that we offer. Or you can get your money back.What does the course Basic Math mainly cover?
| A．Arithmetic. | B．College Mathematics. |
| C．Algebra. | D．Mathematics Education. |
What benefits can students expect from Basic Math?
| A．Stronger imaginative ability. |
| B．Additional presentation skills. |
| C．Greater chances of becoming teachers. |
| D．More mathematical confidence. |
What can we learn about Professor H. Siegel?
| A．He is a guest lecturer at Kentucky Educational Television. |
| B．He works in Georgia State University. |
| C．He is to deliver 30 lectures in Basic Math. |
| D．He specializes in training teachers. |
Where is the passage most likely to have been taken from?
| A．A news report. | B．An advertisement |
| C．A lesson plan. | D．A book review |
You’ve just come home, after living abroad for a few years. Since you’ve been away, has this country changed for the better or for the worse?
If you’ve just arrived back in the UK after a fortnight’s holiday, small changes have probably surprised you—anything from a local greengrocer suddenly being replaced by a mobile-phone shop to someone in your street moving house.
So how have things changed to people coming back to Britain after seven, ten or even 15 years living abroad? What changes in society can they see that the rest of us have hardly noticed—or now take for granted? To find out, we asked some people who recently returned.
Debi: When we left, Cheltenham, my home town, was a town of white, middle-class families—all very conservative (保守的).The town is now home to many eastern Europeans and lots of Australians, who come here mainly to work in hotels and tourism. There are even several shops only for foreigners.
Having been an immigrant (移民) myself, I admire people who go overseas to find a job. Maybe if I lived in an inner city where unemployment was high, I’d think differently, but I believe foreign settlers have improved this country because they’re more open-minded and often work harder than the natives.
Christine: As we flew home over Britain, both of us remarked how green everything looked. But the differences between the place we’d left behind and the one we returned to were brought sharply into focus as soon as we landed.
To see policemen with guns in the airport for the first time was frightening — in Cyprus, they’re very relaxed — and I got pulled over by customs officers just for taking a woolen sweater with some metal-made buttons out of my case in the arrivals hall. Everyone seemed to be on guard. Even the airport car-hire firm wanted a credit card rather than cash because they said their vehicles had been used by bank robbers. But anyway, this is still a green, beautiful country. I just wish more people would appreciate what they’ve got.After a short overseas holiday, people tend to ______ .
| A．expect small changes |
| B．notice small changes |
| C．welcome small changes |
| D．exaggerate (夸大) small changes |
How does Debi look at the foreign settlers?
| A．Cautiously. | B．Skeptically. |
| C．Positively. | D．Critically. |
When arriving at the airport in Britain, Christine was shocked by ______ .
| A．the tight security | B．the messy arrivals hall |
| C．the relaxed policemen | D．the bank robbers |
Which might be the best title for the passage?
| A．Life in Britain. | B．Britain in Memory. |
| C．Britain in Future. | D．Back in Britain. |
Most children, even the youngest of children, are delighted to be around cats and dogs. But these pets carry plenty of germs and allergens（过敏原）, prompting researchers to ask: Are cats and dogs really safe for children？
A study finds that, contrary to many parents’ fears, owning cats or dogs does not increase a child’s risk of developing allergies, and in fact, may actually protect them. The study’s lead author, Dr. Dennic Ownby of the Medical College of Georgia, says that even he was “very surprised” by the results. Ownby and colleagues followed more than 470 children from birth to age 6 or 7, comparing those exposed to cats and dogs during their first year of life to those who were not.
By using skin-prick tests for detecting common allergies, the researchers found that, contrary to what many doctors had been taught for years, children who had lived with a pet were not at greater risk.
Even more remarkable, children who had two or more dogs or cats had an even greater reduction, up to 77 percent, in risk of allergies. Researchers suggest this protective effect may be the result of early exposure to lots of bacteria that are carried by dogs and cats. Exposing young children to these bacteria helps "exercise" their immune systems early in life so that they're better able to resist allergic diseases later.
There's something very important in that first year of life when the immune(免疫) system is developing that we can retrain it away from an allergic response, said Dr. William Davis.
And while researchers are not encouraging parents to buy dogs or cats just to reduce a child’s allergy risk, they say if a family already has one or more animals, there's no need to get rid of them.
Why do the researchers feel “very surprised” by the results of the study?
| A．Because the results are contrary to their expectation． |
| B．Because so many children are playing with cats and dogs． |
| C．Because parents are so much worried about their children． |
| D．Because children with animals may develop allergies easily． |
Compared with children who have pets，those who haven’t ______.
| A．will lose the chance to develop immune system |
| B．will reduce the harm from bacteria |
| C．may suffer allergic diseases more often |
| D．can keep doctors away |
The underlined word “it” in the fifth paragraph refers to________.
| A．the early life | B．an allergic disease |
| C．something important | D．immune system |
What is the passage mainly about?
| A．How to protect your kids from allergies |
| B．Bacteria do good to your kids |
| C．Your pets may be helping your kids |
| D．Advantages of owning pets |
I was very sympathetic with world leaders burdened with resolving conflicts between nations. When my three children were young, in most days it was hard to keep my house from becoming a war zone. It got worse as they grew older. Three years ago, Zack, then 16, couldn’t make it through a day without playing tricks on his sisters, Alex and Taryn, then 11 and 9.
My husband and I tried to understand his adolescent moodiness. We begged, reasoned, punished, and left heartfelt notes on his bed about how his behavior was hurting our family. His response was a shrug and “I say it because it’s true”.
I even tried telling the girls to fight back. But it was a bad idea. Now I had three kids at war. At wit’s end, I poured my heart out to my sister in an e-mail. She wrote back, “Don’t e-mail me. E-mail him.”
Our son was online every day, mailing and instantly messaging his friends. So what if I was within shouting distance? Maybe he would actually hear me this way. There’d be no yelling or door slamming（猛然关闭）. Zack wouldn’t feel under attack. And with a few simple keystrokes, he could respond. Or not. Zack didn’t reply for days. When he finally did, his entire message was four words. I expected the worst, but then smiled when I read them, ”You are right. I’m sorry.” The kids still fought, of course, but Zack scaled back the abuse (恶习). Best of all, I now have an effective way to communicate with not one but three easily annoyed teens. They don’t tune me out as much. They don’t like to listen to me nag (唠叨) .Or as Alex says, “You’re so much nicer online.”
All I know is that the house is quiet, and we’re talking. In fact, Taryn just instantly messaged me from upstairs. It’s time to take her to softball practice.The purpose of this passage is to tell us _________ .
| A．how to solve family problems |
| B．how a mother shows her love to her children |
| C．how to treat kids in a more sensible way |
| D．the value of understanding between parents and children |
By the first sentence of the passage, the author really means to be_______.
| A．humourous | B．sympathetic |
| C．serious | D．inspiring |
How did Zack react when the author first tried to stop his bad behavior？
| A．He was annoyed and got worse. |
| B．He talked back to the author. |
| C．He felt sorry and changed. |
| D．He was persuaded and acted politely. |
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