Why does the author say that nothing was wasted before the invention of fridges
A. people would not buy more food than was necessary.
B. Food Was delivered to people two or three times a week.
C. Food was sold fresh and did not get rotten easily.
D. People had effective ways to preserve their food.
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What is the author's overall attitude toward fridges
A. Neutral (中立的).
B. Critical(批评、遣责的).
C. Objective.
D. Compromising (妥协的).
The researchers at, Comell University suggest that______.
A. husbands hire others to do their housework
B. policies be worked out on women's wages
C. women go out to work instead of working at home
D. husbands pay their wives for. their work at home
《金匮》中治疗脏躁的方剂是 ( )
A. 百合地黄汤
B. 甘麦大枣汤
C. 半夏厚朴汤
D. 逍遥散
设变量已正确定义,则以下能正确计算f=n!的程序段是【 】。
A. F=0: for(i=1;i<=n;i++) f*=i;
B. f=1;for(i=1;i<n;i++) f*=i;
C. f=1; for(i=n;i>1;i++)f*=i;
D. f=-1; for(i=n;i>=2;i--)f*=i;