The scores reported for a certain multiple-choice test were derived by subtracting 1/3 of

Which Vitamin Boosts Brain Power？

Vitamin E has been touted for its anti-aging and anti-cancer benefits because, as an antioxidant, it counters the destructive action of molecules called free radicals. Now a study has shown vitamin E may also help the memory loss and impaired thinking that occurs in the elderly.

Researchers at the Rush Institute for Healthy Aging in Chicago conducted a three-year study involving nearly 3,000 people older than 65 to investigate the cognitive effects of vitamin E in food and supplements.

By comparing the average scores of four different tests of memory and perception, the researchers were able to track change in cognitive function with age. The participants also completed dietary questionnaires periodically, which enabled the researchers to determine their vitamin E intake.

The study found that the higher the intake of total vitamin E, the less change there was in the people's average test scores each year. And those men and women who consumed the most vitamin E had a 36 percent lower rate of decline in their average test scores than those who consumed the least vitamin E. Other antioxidants, such as vitamin A, carotene and vitamin C, had little effect on the results.

Those who took supplements but got little vitamin E from food appeared to have the same protective benefit from the vitamin as those who consumed high amounts of E in their diets, says Martha Clare Morris, an assistant professor at Rush-Presbyterian-St. Luke's Medical Center. Several clinical trials are underway to compare protection from cognitive decline in people taking a supplement or a placebo, she says. In this study, the majority who took a supplement reported taking 400 IU a day.

Vitamin E is______.

A．very popular among some people

B．effective in memory enhancement

C．very helpful to the elderly actions

D．destructive in aging and cancers

U.S. fourth- and eighth-graders improved their math scores in a closely watched international test, but continued to lag well behind peers from top-performing Asian countries.

The U.S. and other governments on Tuesday 11 the results of the test, Trends in International Mathematics and Science Study, the world’s largest assessment of international achievement. Some 425,000 students in almost 60 countries took the exam, administered every four years, starting in 1995.

The test results come as businesses have warned that poor performance in math is eroding U.S. 12 , and as lawmakers in Washington prepare for a key battle over education policy.

U.S. Secretary of Education Margaret Spellings and some experts said the 13 suggest a victory for tougher teaching standards, increased rigor in math instruction, and the frequent standardized testing 14 by President Bush’s No Child Left Behind law. Critics of the law found little evidence to support that conclusion.

In math, U.S. fourth-graders ranked No. 11 on the international test, 15 surpassed by eight countries, led by China, Singapore and Japan, researchers said.

U.S. fourth-graders on average scored 529 in 2007, up from 518 in both 2003 and 1995. The results are reported on a zero to 1,000-point scale, with 500 16 the international average. Top-performing China scored 607. U.S. eighth-graders ranked No. 9 in math with a score of 508, behind many of the 17 Asian countries atop the fourth-grade chart.

“In math, the U.S. is making 18 progress,” says Michael O. Martin, one of the directors of the study at Boston College, which 19_ the test. But Mr. Martin said he worried about the huge gap between the U.S. and Asian countries, which aren’t 20 on their laurels.

A) management I) representingB) truly J) takesC) steady K) promotedD) resting L) sameE) released M) administersF) rapid N) words

G) roughly O) competitivenessH) results

The pattern of crime has varied very little over a long period of years.Murder reaches its high during July and August, as do rape and other violent attacks.Murder, moreover, is more than seasonal: it is a weekend crime.It is also a nighttime crime: 62 percent of murders are committed between 6 p.m.and 6 a.m.

Unlike the summer high in crimes of bodily harm, burglary(夜盗) has a different cycle.You are most likely to be robbed between 6 p.m.and 2 a.m.on a Saturday night in December, January, or February.The most uncriminal month of all？ May —except for one strange statistic.More dog bites are reported in this month than in any other month of the year.

Apparently our intellectual seasonal cycles are completely different from our criminal tendencies.Professor Huntington, of the Foundation for the Study of Cycles, made extensive studies to discover the seasons when people read serious book, attend scientific meetings, make the highest scores on examinations, and propose the most changes to patents (专利).In all instances, he found a spring peak and an autumn peak separated by a summer low.On the other hand, Professor Huntington’s studies indicated that June is the peak month for suicides and admissions to mental hospitals.June is also a peak month for marriages!

6.Which of the following is the best title for this article？()

A.A Time for Murder

B.Summer Crime

C.Crime Cycles Throughout the Year

D.Criminal Tendencies in Different Months

7.According to Paragraph 2, a murder would most likely occur ____.

A.on a weekend night in winter

B.on a weekday afternoon in summer

C.on a weekend morning in winter

D.on a weekday night in summer

8.In which of the following months are crimes least seen？()

A.April

B.May

C.June

D.October

9.In Paragraph 4, why is an exclamation mark (感叹号“!”) used at the end of the last sentence？()

A.Because the author is surprised that so many people marry in June.

B.Because the author is surprised that the marriage peak occurs in the same month as the peak for suicides and admissions to mental hospitals.

C.Because the author doesn’t understand why the peaks for suicides and marriage are in the same month.

D.Because the author lays emphasis on this sentence.

10.What does the last paragraph mainly tell us？()

A.Prof.Huntington found seasonal crime cycles.

B.Spring and autumn are intellectual seasons when people work efficiently.

C.June is the peak month for suicides.

D.Spring and autumn are crime peaks.

They have ______ of books in the classroom.

A) six scores B) six score C) sixteen scores D) sixty scores

A.int scores[];

B.int[] scores;

C.int scores={0,0,0,0};

D.int scores=new int[10];

A.0＜=scores＜=100

B.scores＞=0||scores＜=100

C.scores＜0&&scores＞100

D.scores＜0||scores＞100

A.scores + 10

B.np.add(scores, 10)

C.scores[10].add(10)

D.scores + [10,10,10,10,10,10,10]

A.scores + 10

B.np.add(scores, 10)

C.scores[10].add(10)

D.scores + [10,10,10,10,10,10,10]

A.grant insert, update to table scores on someone

B.grant insert and update to table scores on someone

C.grant insert, update on scores to someone

D.grant insert and update on scores to someone