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Human intelligence and the IQ scales used to measure it once again are becoming the focus of fiery debate.As argument rages over declining test scores in the nation"s schools, an old but explosive issue is reappearing ;What is intelligence—and is it determined largely by geneticsThe controversy erupted more than a decade ago when some U. S. scholars saw a racial pattern in the differing scores of students taking intelligence and college-entrance tests.Now, the racial issue is being joined by others. Teachers, psychologists, scientists and lawyers argue over the question of whether IQ—intelligence quotient—tests actually measure mental ability, or if findings areskewedby such factors as family background, poverty and emotional disorders.Moreover, some authorities assert that the rise in the number of college-educated Americans and their tendency to marry among themselves are creating a class of supersmart children of brainy parents—and, on the other side of the scale, alumpenproletariatof children reflecting the supposedly inferior brainpower of their parents.Critics such as Harvard University biologist Richard C. Lewontin disagree. If mental ability were largely determined by inheritance, he says, efforts to enhance intelligence through the betterment of both home and child-rearing environments could only be marginally effective. He comments:"Genetic determinism could be used to justify existing social injustice as predetermined and inevitable and would render efforts made toward equalitarian goals as useless."Supporting Lewontin in this is J. McVicker Hunt, a professor at the University of Illinois, who maintains that IQ levels can he raised significantly by exposing children at an early age to stimulating environments. Hunt"s studies show that early help in such areas as education and nutrition can raise a child"s IQ by an average of 30 to 35 points.At stake in the uproar over IQ is the national commitment to improve the capabilities of the poor by investing billions of dollars annually in educational, medical and job programs. In the view of biologist Lewontin, intelligence

A. was a matter of genetic traits.
B. had little to do with environments.
C. could be improved with human efforts.
D. was profoundly affected by inheritance.

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Many people who fly at least occasionally have come down with a cold or the flu shortly after disembarking. Is the air in airborne commercial jets 1 The Association of Flight Attendants (AFA), 2 which 42,000 flight attendants with 27 airlines are represented, evidently thinks so. The organization claims that the incidence of air-quality-related diseases has 3 among its members and demands that prompt actions be 4 to improve the conditions in the airplane cabin.A study the AFA 5 in 1997 uncovered about 1,000 self-reported incidents of headaches, dizziness and memory loss 6 flight attendants and passengers. Some flight attendants were too ill to 7 their safety duties, while others have been permanently disabled.Because of airlines" efforts to 8 their expenses, cabin-air filters are not cleaned 9 . The complaints of flight attendants do not always give 10 to correct maintenance. Airlines turned to recycled air, 11 that they would reduce some of their costs. They are not required to put filters in. Airlines are 12 great pressure to get their flights out 13 . So they do not pay as much attention to systems that are not as 14 to flight schedule and safety.Recent research findings emphasize the concern that filters can 15 engine chemicals into the cabin air. This may not happen 16 every flight, but it is a persistent problem.In a study published in October 1998 an investigation was made 17 complaints of crew members 18 air quality and health. More than half of the 200 subjects reported health problems they 19 to cabin air. It was concluded that these health problems were consistent with 20 harmful gases and substances.

A. enclose
B. block
C. introduce
D. detect

Many people who fly at least occasionally have come down with a cold or the flu shortly after disembarking. Is the air in airborne commercial jets 1 The Association of Flight Attendants (AFA), 2 which 42,000 flight attendants with 27 airlines are represented, evidently thinks so. The organization claims that the incidence of air-quality-related diseases has 3 among its members and demands that prompt actions be 4 to improve the conditions in the airplane cabin.A study the AFA 5 in 1997 uncovered about 1,000 self-reported incidents of headaches, dizziness and memory loss 6 flight attendants and passengers. Some flight attendants were too ill to 7 their safety duties, while others have been permanently disabled.Because of airlines" efforts to 8 their expenses, cabin-air filters are not cleaned 9 . The complaints of flight attendants do not always give 10 to correct maintenance. Airlines turned to recycled air, 11 that they would reduce some of their costs. They are not required to put filters in. Airlines are 12 great pressure to get their flights out 13 . So they do not pay as much attention to systems that are not as 14 to flight schedule and safety.Recent research findings emphasize the concern that filters can 15 engine chemicals into the cabin air. This may not happen 16 every flight, but it is a persistent problem.In a study published in October 1998 an investigation was made 17 complaints of crew members 18 air quality and health. More than half of the 200 subjects reported health problems they 19 to cabin air. It was concluded that these health problems were consistent with 20 harmful gases and substances.

A. confided
B. promised
C. ensured
D. convinced

With a new Congress drawing near, Democrats and Republicans are busily designing competing economic stimulus packages. The Republicans are sure to offer tax cuts, the Democrats—among other things—financial relief for the states. There is one measure, however, that would provide not only an immediate boost to the economy but also immediate relief to those most in need: a carefully crafted extension of the federal unemployment insurance program. The Senate approved such an extension before it adjourned in November. The House of Representatives refused to go along. It was among the greatest failures of the 107thCongress.One consequence is that jobless benefits for an estimated 780,000 Americans will abruptly stop tomorrow, even though most recipients have not yet exhausted their benefits. President Bush failed to show any leadership on this matter during the November Congress. Later, he finally asked Congress to extend the program for these workers and to make the benefits effective from Dec. 28.That"s not enough. The way unemployment insurance typically works is that states provide laid-Off workers with 26 weeks of benefits, followed by 13 weeks of federal aid. Under Mr. Bush"s scheme, federal benefits would be extended only for those who were already receiving them on Dec. 28. The extension would not cover the jobless workers who will exhaust their regular state-funded benefits after Dec. 28—an estimated 95,000 every week—but will receive no federal help unless the program is re-authorized. By the end of March, 1.2 million workers could fall into this category.The Senate saw this problem coming, and under the leadership of Hillary Rodham Clinton for New York and Don Nickles of Oklahoma, passed a bill that would not only have covered people already enrolled in the federal program but provided 13 weeks of assistance for those losing their state benefits in the new year. The House, for largely trivial reasons, refused to go along.Bill Frist, the new Senate majority leader, says he is looking for ways to put a kinder, gentler face on the Republican Party. Passing the Clinton-Nickles bill would be a good way to begin. The House should then follow suit. One of the House"s complaints last year was that, at $5 billion, the Clinton-Nickles bill was too expensive. That"s ridiculous, considering the costs of the tax cuts that House Republicans have in mind.The unemployment rate last month stood at 6 percent, the highest since mid-1994. The country could use a $5 billion shot in the arm fight about now. So could a lot of increasingly desperate people. How does the author feel about the President"s request for the extension and its coverage

A. Short of vision.
B. Late and incomplete.
C. Lacking in consistency.
D. Exhaustive but ineffective.

Many people who fly at least occasionally have come down with a cold or the flu shortly after disembarking. Is the air in airborne commercial jets 1 The Association of Flight Attendants (AFA), 2 which 42,000 flight attendants with 27 airlines are represented, evidently thinks so. The organization claims that the incidence of air-quality-related diseases has 3 among its members and demands that prompt actions be 4 to improve the conditions in the airplane cabin.A study the AFA 5 in 1997 uncovered about 1,000 self-reported incidents of headaches, dizziness and memory loss 6 flight attendants and passengers. Some flight attendants were too ill to 7 their safety duties, while others have been permanently disabled.Because of airlines" efforts to 8 their expenses, cabin-air filters are not cleaned 9 . The complaints of flight attendants do not always give 10 to correct maintenance. Airlines turned to recycled air, 11 that they would reduce some of their costs. They are not required to put filters in. Airlines are 12 great pressure to get their flights out 13 . So they do not pay as much attention to systems that are not as 14 to flight schedule and safety.Recent research findings emphasize the concern that filters can 15 engine chemicals into the cabin air. This may not happen 16 every flight, but it is a persistent problem.In a study published in October 1998 an investigation was made 17 complaints of crew members 18 air quality and health. More than half of the 200 subjects reported health problems they 19 to cabin air. It was concluded that these health problems were consistent with 20 harmful gases and substances.

A. decline
B. cut
C. shrink
D. save

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