give the government more control．

Sometimes people offer their time because they wish to accomplish something for which no money is paid，to do something that will be of benefit to the entire community．It is true that some people use their leisure because they are truly interested in the work；or they are learning from the experience．

No matter what the reason is，hundreds of thousands of so．called leisure hours are put into hard，unpaid work on one or another community need．

59. This passage is mainly about ________ ．

A. why America is a country of sports

B. how Americans spend their free time

C. why America is a"self-improvement"country

D. how Americans are devoted to their community activities

60．The writer mentions the foundation of the country in order to indicate ________ _．

A．the early history of America

B．the American people's determination to live

C．the reason for Americans' willingness to cooperate and share responsibility

D．the American people's love for freedom

61．Which of the following best explains the meaning of the underlined word"leisure"?

A．work time B. energy C. effort D. spare time

62. What can we infer from the text?

A. The first settlers left their hometown for political and religious reasons．

B. Many Americans don′t trust the central government．

C. American people enjoy building things for their homes just for fun．

D. Americans continue their education at their own expense．

Worldwide，almost as many women as men die from heart disease．Yet most treatment methods have come from studies of men．Researchers are now learning more about ways that heart．disease can be different in women．

For example，they say a condition called coronary microvascular syndrome(冠脉微血管综合症)appears to be more common in women than men．

When a heart attack is suspected，doctors look for a major blockage(阻塞物)in the arteries(动脉)that supply oxygen to the heart．With coronary microvascular syndrome，fatty material spreads evenly(均匀地)in very small arteries of the heart．This buildup of plaque(血小板)along the artery wall narrows the flow of oxygen．The pain can be similar to that of blocked arteries．

But doctors often miss this condition because it does not show up in the usual tests for blockages. Women are often sent home，thinking they are OK．Yet many are at high risk for a heart attack．

In USA，researchers say as many as three million women could have coronary microvascular syndrome．The Journal of the American College of Cardiology recently published findings from a government study．

The study is called the Women's Ischemia Syndrome Evaluation(妇女缺血综合征的评价)，or WISE．Ischemic heart disease involves restricted blood flow．The study began in nineteen ninety-six and involves more than nine hundred women who suffer chest pain．

Researchers found large blockages in major arteries in about one-third of the women．The other women looked clear on an angiogram(血管造影)test for blockages．But the researchers say half