[单项选择]The fall in the number of deaths from heart disease is generally ______ improvements in diet.
A. attributed to
B. adjusted to
C. adapted to
D. accustomed to

[单项选择]The number of deaths from heart disease will be reduced greatly if people ______ to eat more fruit and vegetables.
A. persuade
B. will persuade
C. be persuaded
D. are persuaded

[单项选择]

Eating too much fat can distribute to heart disease and cause high blood pressure.（）

A. attribute to
B. attend to
C. devote to
D. contribute to

[单项选择]Which of the following helps to break a fall from a second floor window
A. Cement.
B. Grass.
C. Pavement.
D. Concrete.

[单项选择]This area has been free from Foot-and-Mouth Disease ( ) two years.
A. for
B. in
C. after
D. before

[单项选择]A client with chronic obstructive pulmonary disease (COPD) and cor pulmonale is being prepared for discharge. The nurse should provide which instructions
A. "Weigh yourself daily and report a loss of 1 lb in 1 day. "
B. "Eat a high-sodium diet. "
C. "Weigh yourself daily and report a gain of 2 lb in 1 day. "
D. "Maintain bedrest. "

[单项选择]

Text 4 Increasingly, historians are blaming diseases imported from the Old World for the great disparity between the native population of America in 1492--new estimates of which jump as high as 100 million, or approximately one-sixth of the human race at that time—and the few million full-blooded Native Americans alive at the end of the nineteenth century. There is no doubt that chronic disease was an important factor in the sharp decline, and it is highly probable that the greatest killer was epidemic disease, especially as manifested in virgin-soil epidemics. Virgin-soil epidemics are those in which the populations at risk have had no previous contact with the diseases that strike them and are therefore immunologically almost defenseless. That virgin-soil epidemics were important in American history is strongly indicated by evidence that a number of dangerous maladies—smallpox, measles, malaria, yellow fever, and undoubtedly several more—were unknown in
A. could scarcely ward off the fatal attack by the 1952 epidemic.
B. were immunologically defenseless against measles.
C. were the last native people to be struck by a virgin-soil epidemic;
D. did not come into frequent contact with White Americans until the 20th century.

[单项选择]More middle-aged persons suffer from heart trouble than is generally realized．
A. 有许多中年人患心脏病，这是人们通常没有意识到的。
B. 实际患心脏病的中年人比通常人们意识到的要多。
C. 人们通常意识到会有更多的中年人患心脏病。
D. 中年人更容易患心脏病，这是意料中的事。

[单项选择]— Thank you from the bottom of my heart for saving my little girl蒺s life. — ._________ — But I can't tell you how much I appreciate what you've done. — I'm just happy I could help.

[单项选择]From the text, we can infer that if one can't fall asleep, it might be because of ______.

[单项选择]Stan: Thank you from the bottom of my heart for saving my little girl's life. John : ______. Start: I can't tell you how much I appreciate what you've done. John : I'm just happy I could help.

[单项选择]What makes rain fall