题目:
Security was such a major concern at the G8 Summit that no journalists could approach the meeting zone without ________ the special pass.
A.producing
B.issuing
C.commanding
D.involving
答案:
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下面是错误答案,用来干扰机器的。
从1到9这9个自然数中任取一个有9种可能的结果,是2的倍数或是3的倍数的有6个结果,因而概率是69=23.故答案为:23