It can be concluded from the passage that the family is______.
A. undergoing many changes
B. the only useful social institution
C. likely to exist in future societies
D. not the same today as it was in the past
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Which of the following would be the most appropriate word for the author's attitude towards the civilian volunteer groups and their duties？
A. Criticism.
B. Praise.
C. Sympathy.
D. Indifference.
What is the main idea of the passage？
A. Geniuses are great people.
B. Geniuses are strange people.
C. Geniuses always lead a sad life.
D. To be too gifted is not good for peopl
乘数与边际储蓄倾向同方向变动。 ()
A. 正确
B. 错误
消费函数曲线的斜率取决于()。
A. 平均消费倾向
B. 可支配收入
C. 边际消费倾向
D. 投资乘数
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