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【单选题】
People often recall having felt chilled before the onset of a cold. This supports the hypothesis that colds are, at least sometimes, caused by becoming chilled; it is the chill that allows a rhino virus, if present, to infect a person. Which of the following, if true, most seriously weakens the force of the evidence cited above?A.
Being chilled is a form. of stress, and stress lowers the defenses of a person' s immune system, which guards against infection.
B.
After a rhino virus has incubated in a person for several days, the first symptom it causes is a feeling of chilliness.
C.
People who are tired and then become chilled are more likely to catch severe colds than are people who are chilled without being tired.
D.
Some people who catch colds are not sure what it was that allowed them to catch cold.
E.
Rhino viruses are not always present in the environment, and so a person could become chilled without catching a cold.
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【单选题】当形参和实参都为简单变量,在进行函数调用时,以下说法正确的是( )。
A.
实参和与其对应的形参拥有共同的存储空间。
B.
形参是虚拟的，不占用存储空间。
C.
只有当实参和与其对应的形参同名时才共同占用一个存储空间。
D.
实参和与其对应的形参各自占用一个独立的存储空间。
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