单选题：Whatdidn'tMr.Cousinsdoinhisexperimentswithlaughter?

题目内容：

Whatdidn'tMr.Cousinsdoinhisexperimentswithlaughter? A．WatchfunnyTVshow
B．Readfunnybook
C．Takemedicin
D．Sleepwheneverhefelttire

参考答案：

答案解析：

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I am feeling a lot more healthy than I was.A．many B．no C．some D．much

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国内货物1件，毛重10千克，声明价值30000元人民币，其声明价值附加费是（）A．125 B．135 C．145 D．155

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