在16位的PC机上使用C语言，若有如下定义：struct data{int i;char ch;double f;} b;则结构变量b占用内存的字节数是（）。
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以下程序输出结果是（）#include typedef union{ long i;int k[5];char c;} DATE;struct date{ int cat;DATE cow;double dog;} too;DATE max;main(){ printf（"%d\n",sizeof（struct date）+sizeof（max））;}
A. 25
B. 30
C. 18
D. 8
Most economists believe that classical economic theory is a good description of the world in
A. the long run, but not in the short run.
B. the short run, but not in the long run.
C. the short run and in the long run.
D. neither the short nor long run.
Business cycles
A. are explained mostly by fluctuations in corporate profits.
B. no longer are very important due to government policy.
C. are fluctuations in real GDP and related variables over time.
D. All of the above are correct.
People will spend less if the price level
A. rises, making the dollars they hold worth more.
B. rises, making the dollars they hold worth less.
C. falls, making the dollars they hold worth more.
D. falls, making the dollars they hold worth less.
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