[简答题]Transfusion of plasma or whole blood increases the volume of circulating blood, A B raising blood pressure and ensuring adequate distribution of oxygenated blood C among the body. D

[名词解释]Transfusion transmitted virus

[简答题]plasma cell

[填空题]World economic growth increases if countries concentrate on what they do best.

[填空题]Reading good books increases your contentment when you are cheerful and relieves your sorrow when you are sad.

[简答题]Blood group:

[简答题]Blood coagulation：

[填空题]As automation increases, the problems of unemployment will become more serious unless more men and women (give) ______ the training necessary for white-collar positions.

[简答题]It found that increases in air pollution tended to ______.

[简答题]As the population increases, more and more people look hungrily at the land set aside for game reserves.

[单项选择]ff the number of stocks in the portfolio increases, what is the effect on systematic and unsystematic risk Systematic Risk Unsystematic Risk （）①A. Decreases Decreases②B. Remains constant Increases③C. Remains constant Decreases
A. ①
B. ②
C. ③

[单项选择]If the cost of goods sold increases and inventory decreases, the number of days of inventory most likely:（）
A. decreases.
B. remains unchanged.
C. increases.

[单项选择]
As cold season approaches, many Americans stock up on their vitamin C and Echinacea(紫锥 花精油). But following the age -old advice about catching up on sleep might be more important.
Studies have demonstrated that poor sleep and susceptibility (易受影响) to colds go hand in hand, and scientists think it could be a reflection of the role sleep plays in maintaining the body’s defenses.
In a recent study for the Archives of Internal Medicine, scientists followed 153 men and women for two weeks, keeping track of their quality and duration of sleep. Then, during a five - day period, they quarantined(进行检疫隔离) the subjects and exposed them to cold viruses. Those who slept an average of fewer than seven hours a night, it turned out, were three times as likely to get sick as those who averaged at least eight hours.
Sleep and immunity, it seems, are tightly linked. Studies have found that
A. They checked the subjects’health problems and gave advice.
B. They made record of the subjects’quality and length of sleep.
C. They exposed the subjects to different kinds of viruses.
D. They gave medicine to the subjects who had caught col

[简答题]There were increases across the board, but for usual it was the already wealthy who fared best.

[填空题]While shocks of life tend to cause increases in the rates of many diseases, social contacts can help us to get through these otherwise very rough changes.