第38题: [单项选择]In the third paragraph, the phrase "go down the drain" probably means _______. A. lost in a wasteful way B. draw off gradually C. drink all the liquid from the cup D. receive the waters of a lake 参考答案:A 答案解析:[注释] 词汇题。“down the drain”这个短语在句子中的意思是“白费工夫”。“This is wonderful,but it can go down the drain if you f