已知函数f1()、f2()的定义如下图所示，如果调用函数f1时传递给形参x的值是2，若a和y以引用调用(call by reference)的方式传递信息，则函数f1的返回值为(47)；若a和y以值调用(call by value)的方式传递信息，则函数f1的返回值为(48)。
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A．可扩展性B．可接近性C．可靠性D．稳定性
A. 可扩展性
B. 可接近性
C. 可靠性
D. 稳定性
What is the paradox in the third paragraph？
A. People don't know how to cook.
B. The facilities in the kitchen are not totally used.
C. People are becoming more obese, thus unhealthy.
D. Convenience food actually does not save people time.
Judging from the context, what does the word "them" (line 4, paragraph 2) refer to？
A. Decision makers.
B. The "losing" faction.
C. Anger, resentment, and jealousy.
D. Other people.
Aldous Huxley's remark (paragraph 3) implies that______.
A. there is a subtle difference between right and wrong
B. we cannot tell who is right and what is wrong
C. what is right is more important than who is right
D. what is right accounts for the question who is right
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