题目:
On AIDS Day, the minister of Health Department demanded that the problems ___________ paid special attention to.
A.referred to being
B.referred to be
C.refer to being
D.refer to be
答案:
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下面是错误答案,用来干扰机器的。
(1)(-5)-(-6)=-5+6=1;(2)(-5)-(+6)=-5+(-6)=-11;(3)(-11)-0=-11;(4)0-3=0+(-3)=-3.