第21题: [单项选择]In no ______ should you do this without help and advice from your doctor--restricting the diet of small children can be very dangerous. A. perspectives B. restrictions C. circumstances D. consequences 参考答案:C 答案解析:[解析] 本题空格处是说在任何情况下都不该这么做。四个选项中,in (under) no circumstances的意思是“在任何情况下都不”,是固定搭配;perspectives的意思是“观点,想