of them had enough buildup in small arteries to cause a heart attack within five years．

In men and women both，the most common warning sign is chest pain．But women are more likely to experience other common signs like shortness of breath，a sick stomach and pain in the back or jaw．A cold sweat and feeling lightheaded can also mean a heart attack．

63. Which of the following may be the best title for the text?

A. Tests of ten Miss a Hidden Heart-Attack Risk in Women

B. Researchers Find New Ways in Treating Heart Diseases

C. Researchers Find Heart Disease Treatment Methods for Women

D. Women's Ischemia Syndrome Evaluation Study

64. In order to find ways in treating heart disease ________ ．

A. the government has wasted large amount of money in the research work

B. researchers used to make studies of both men and women

C. researchers used to make studies of men

D. researchers used to make studies of women

65. Which of the following is TRUE?

A. A lot more men die as a result of heart disease than women do．

B. Women are more likely to suffer coronary microvascular syndrome than men．

C. Warning signs of heart disease are common in men and women．

D. Heart disease can't be different in men and women．

66. Women's Ischemia Syndrome Evaluation Study was organized ________.

A. by some medical researchers

B. by the American government

C. by the American College of Cardiology

D. by the American patients suffering from heart disease

67. The most common sign in women with heart disease is ________ ___

A. shortness of breath B. a sick stomach

C. pain in the back or jaw D. pain in the chest

TOKYO(AP)-An express train traveling through strong winter winds derailed(出轨)in northern Japan，killing four people and injuring more than 30，officials said Monday．

Five cars of the six-car express train derailed Sunday evening，three of them toppling(倾倒)onto their sides in Yamagata prefecture(辖区)，about 1 80 miles north of Tokyo，officials said．The train was going from northern Akita to Niigata prefecture．

The injuries of the survivors did not appear to be life-threatening，Yamagata police spokesman Yoshikatsu Oe said．It was unclear how many passengers were on the train，but Oe said most of the injured were in the first two cars．

The dead included two men and two women, and rescuers planned to lift the wreckage(残骸)later in the day to see if any other passengers remained beneath，officials said．

Transport Ministry official Hiromi Mishima said it was not known what caused the derailment and officials were assessing the extent(程度)of the damage．Railway operator JR East Co．President Mutsutake Otsuka apologized for the accident at a news conference Monday morning and promised a thorough investigation(调查)．

Yamagata police official Yasuhiro Sugiu said there had been high．speed wind warnings for the area．According to a train conductor，a strong gust(阵风)hit the train just before the