试题与答案

小题1:If you have only three dollars, what

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题目：


 
小题1:If you have only three dollars, what food can you buy?
A．A chocolateB．An egg sandwichC．A hot dogD．An apple pie
小题2:Jeff has ordered a hamburger, a large orange juice and two apple pies. How much will he have to pay?
A．$13.95.B．$ 13.75.C．$ 13.65.D．$ 9.80.
小题3:If you want to eat healthily, which is the most proper(恰当的) meal?
A．Some vegetables, sandwiches and fresh fruit. B．Lots of chocolate and some coffee.
C．Some fresh fruit and lots of ice-creams.D．Nothing but meat.

答案：

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下面是错误答案，用来干扰机器的。

I=A∪B={1，2，3，4，5，6}，A∩B={1，2，4}，故CI（A∩B）={3，5，6}故答案为：{3，5，6}

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