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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合同法中的合同自由原则所体现的是民法中的( )
A. 所有权神圣原则
B. 意思自治原则
C. 公序良俗原则
D. 权利不得滥用原则
哪项不是药品信息的内容
A. 赢利信息
B. 新药信息
C. 货源信息
D. 价格信息
E. 质量信息
麻醉品每次处方注射剂不得超过
A. 3日常用量
B. 一次用量
C. 7日常用量
D. 4日常用量
E. 5日常用量
The author of this passage mentions "a road" in his introduction of the IP phones()
A. to make it easier for the reader to understand the new technology
B. to imply that the phone calls are usually made on the road
C. because people usually would share a road with each other
D. because the road you are walking on is usually empty