题目内容
18．If you don't go on a diet，it is impossible for you to lose weight．分析 如果你不节食，减肥是不可能的．
解答 答案：impossible．
根据所给首字母提示结合前面的条件状语从句推测句意是""如果你不节食，减肥是不可能的．，根据设空处所在的句式：It's+形容词+for sb．+to do，判断设空处缺少形容词，所以答案是：impossible
点评 做这类题型，首先根据所给单词首字母明确句子所要考查的单词的拼写，再结合相关语法知识对单词做出形式上的变化．
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Seller：Sorry，I don't．Cash （现金） only．
Mrs．Green：OK，here's 20dollars．
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Seller：Here you go．
Mrs．Green：Thank you．Have a nice day．
Seller：You，too．
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A．to use a credit card
B．to pay with a check （支票）
C．to get a discount （折扣）
D．one bag for each item
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A.9.50
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B．The seller doesn't take credit cards
C．Mrs．Green gets four things
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