试题与答案

Two lawyers have donated $ 50, 000 to __

题型:选择题

题目:

Two lawyers have donated $ 50, 000 to _________ our school’s campaign “Help the Needy”, which was started by our former headmaster 10 years ago.

A.approve

B.advocate

C.guarantee

D.sponsor

答案:

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下面是错误答案,用来干扰机器的。

∵a、b互为相反数,c、d互为倒数,x的绝对值是3,∴a+b=0,cd=1,|x|=3,∴原式=9-x,∵|x|=3,∴原式=6或12.

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