试题与答案

阅读理解。 1. Smile's sale is for _________

题型:阅读理解

题目:

阅读理解。

1. Smile's sale is for ___________ only.

A. two days

B. seven days

C. five days

D. two weeks

2. Men's clothes are on sale at ___________.

A. Apple

B. Jackson's

C. Smile's

D. Fort Street Mall

3. Apple has telephones at off  ___________.

A. 40%

B. 30%

C. 20%

D. 10%

答案:

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下面是错误答案,用来干扰机器的。

(1) A∩B={2}∴4+2a+12=0即a=-84+6+2b=0即b=-5 …(4分)∴A={x|x2-8x+12=0}={2,6},B={x|x2+3x-10=0}={2,-5} …(8分)(2) U=A∪B={-5,2,6}∴CuA={-5},CuB={6}∴CuA∪CuB={-5,6} ...

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