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Novel approaches to baby making seem to be coming at us so fast that we hardly have time to digest one before the next one hits — test-tube babies, egg donation, surrogacy, cloning and now sex selection. And just as with earlier methods, the new sperm-separation technique announced last week has triggered plenty of ethical concern. Only a few critics have argued that tampering with nature to avoid a sex-linked genetic disease should be taboo. But plenty have expressed misgivings about using the new technology more casually, to balance families, or simply because parents prefer boys or girls. Such choices, critics say, could lead to an imbalance in the sex ratio, with drastic consequences for society.
These arguments are not very persuasive. In some developing countries where boys are more highly valued than girls, sex selection is already standard practice, accomplished by means of infanticide of amniocentesis and abortion. The new sperm-separation technique makes i
A. The sexes go far out of balance in Western countries.
B. Perfect balance would not be achieved in view of an American perfect family.
C. Evolutionary and economic theories both predict balance of sex ratio in the long run.
D. It is high time for us to prevent sex selection from becoming routine.

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Novel approaches to baby making seem to be coming at us so fast that we hardly have time to digest one before the next one hits — test-tube babies, egg donation, surrogacy, cloning and now sex selection. And just as with earlier methods, the new sperm-separation technique announced last week has triggered plenty of ethical concern. Only a few critics have argued that tampering with nature to avoid a sex-linked genetic disease should be taboo. But plenty have expressed misgivings about using the new technology more casually, to balance families, or simply because parents prefer boys or girls. Such choices, critics say, could lead to an imbalance in the sex ratio, with drastic consequences for society.
These arguments are not very persuasive. In some developing countries where boys are more highly valued than girls, sex selection is already standard practice, accomplished by means of infanticide of amniocentesis and abortion. The new sperm-separation technique makes i
A. Sex selection goes against nature.
B. Choosing gender leads to an imbalance in the sex ratio.
C. Preference of a boy over a girl will be terrible for society.
D. It is impossible to avoid a sex-linked genetic disease.

[单项选择]Novel approaches to babymaking seem to be coming at us so fast that we hardly have time to digest one before the next one hits test-tube babies, egg donation, surrogacy, cloning and now sex selection. And just as with earlier methods, the new sperm-separation technique announced last week has triggered plenty of ethical concern. Only a few critics have argued that tampering with nature to avoid a sex-linked genetic disease should be taboo. But plenty have expressed misgivings about using the new technology more casually, to balance families, or simply because parents prefer boys or girls. Such choices, critics say, could lead to an imbalance in the sex ratio, with drastic consequences for society.
These arguments are not very persuasive. In some developing countries where boys are more highly valued than girls, sex selection is already standard practice, accomplished by means of infanticide of amniocentesis and abortion. The new sperm-separation technique makes it easier for more

[单项选择]What kind of magic can make an 800-page novel seem too short Whatever it is, debut author Susanna Clarke is possessed by it, and her astonished readers will surely hope she never recovers. Her epic history of an alternative, magical England is so beautifully realized that not one of the many enchantments Clarke chronicles in the book could ever be as potent or as quickening as her own magnificent narrative.
It is 1806, and Gilbert Norrell is the only true magician in England. He sets out to restore the practice of magic to a nation that has not seen it for more than 300 years. But there is an odd and fateful twist to Norrell’s character: he is as scholarly and insufferably pedantic as he is gifted. In short, Norrell is the most boring and unmagical person imaginable. This is Clarke’s masterstroke, the necessary touch of ordinary candleshine in the midst of all the uncanny fairy light she dispenses.
Enter Jonathan Strange, the intuitive magician—the natural—who can improv
A. recover from the effects of her success
B. continue to produce wonderful work
C. limit her craft to Jane Austen
D. understand Strange’s magic

[简答题]International investors seem incapable of ending their love affair with the dollar. America’s economy has slowed sharply this year, yet its currency has risen to a 15-year high in trade-weighted terms. Against the euro the dollar touched $0.88—8% higher than in early January and close to the level at which the European Central Bank and the Federal Reserve jointly intervened to prop up the European currency last September. Why is the euro looking sickly There are plenty of theories. One is that the markets do not trust the ECB: the euro-area economies are not immune to America’s downturn, yet the central bank still seems more concerned with fighting inflation than with supporting growth; another more plausible explanation is that, in an uncertain global economic climate, the dollar has resumed its traditional role as a safe-haven currency. Most economists reckon that the euro is undervalued and expect a rebound over the next year. One of the most optimistic is Goldman Sachs, which is

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Western airliner manufacturers seem to be tripping over themselves in their eagerness to sign collaborative agreements with Asian partners as a low-cost route to developing new airliners. Their potential Asian partners seem to be tripping over themselves to sign such agreements, as a low-cost route to acquiring new airliner technology. If they are not careful the two sides will end up tripping over each other: the one by selling its birth-right for short-term gain, the other by trying to break into a market which isn’t big enough to sustain it.
Technology transfer works in a growing market, where the aspirations of the new entrant receiving that technology can be met through expansion. The airliner market is not such a device.
Even the most optimistic projections of airliner sales for the next 20 years show that airliner manufacture can only be profitable if a small number of aircraft builders share the available sales. It follows that if new manufacturers c
A. a production place
B. the initial operation of building aircraft
C. a research institute
D. a position where to start building