[单项选择]How many of the Americans are left handers
A. 10%
B. 12%
C. 50%
D. 80%

[单项选择]How many of the Americans are left-handers
A. 10%.
B. 12%.
C. 50%.
D. 84%.

[单项选择]How many Israeli Moslems left Wednesday


A. 3,000.
B. 5,000.
C. 1500.
D. 5100.

[单项选择]How many Serbian immigrants and Serbian-Americans live in the Chicago area


A. About 5,000.
B. More than 50,000.
C. At least 500,000.
D. Less than 50,000.

[单项选择]How many Americans are there in colleges and universities


A. About seven million.
B. Nearly half of the American population.
C. Young persons under twenty-five.

[单项选择]How many orangutans are left now
A. 25 000.
B. Over 25 000.
C. About 25 000.
D. No more than 25 000.

[单项选择]How many adult Americans jog for exercise according to The National Adult Physical Fitness Survey
A. 5.5 million.
B. 6.5 million.
C. 7.5 million.
D. 8.5 million.

[单项选择]According to the passage, how many Americans have little or no education
A. Two percent of the people in the country.
B. Children under the age of 16.
C. The students who have to work.
D. One third of the population.

[单项选择]How many Chinese Americans are there in the U.S. today


A. Less than 500,000.
B. More than 500,000.
C. Less than 5,000,000.
D. More than 5,000,000,

[单项选择]Among the left handers, ______.
A. few are men
B. most of them are women
C. half of them are men
D. two thirds are men

[单项选择]Many people left their homeland because of political persecutions and great famine. Such was the ______ in Ireland in the 1840s.
A. affair
B. situation
C. condition
D. event

[单项选择]Many Americans think a national committee should be formed to discuss （） to existing mass transit system.
A. alterations
B. alternations
C. attendants
D. alternatives

[单项选择]

Many Americans harbour a grossly distorted and exaggerated view of most of the risks surrounding food. Fergus Clydesdale, head of the department of food science and nutrition at the University of Massachusetts-Amherst, says bluntly that if the dangers from bacterially contaminated chicken were as great as some people believe, "the streets would be littered with people lying here and there."
Though the public increasingly demands no-risk food, there is no such thing. Bruce Ames, chairman of the biochemistry department at the University of California, Berkeley, points out that up to 10% of a plant’s weight is made up of natural pesticides (杀虫剂). Says he :"Since plants do not have jaws or teeth to protect themselves, they employ chemical warfare." And many naturally produced chemicals, though occurring in tiny amounts, prove in laboratory tests to be strong carcinogens--a substance which can cause cancer. Mushrooms (磨菇) might be banned if they were
A. They overstate the government's interference with the food industry.
B. They are overoptimistic about the safety of their food.
C. They overestimate the hazards of their food.
D. They overlook the risks of the food they eat.

[单项选择]Many young Americans have traveled abroad and gotten hooked on __________ foods.
A. exotic
B. drastic
C. periodic
D. intrinsic