若|a|=2，则a=[ ]
A．2
B．﹣2
C．2或﹣2
D．以上答案都不对
答案：C
The money ___will be used ___ a “Project Hope”.
A．which is collected, for
B．is collected, for
C．collected, on
D．which collected, for
卷烟工艺要求：滤嘴烟单支重量允差（）mg。
A.±0.05
B.±0.10
C.±0.12
D.±0.15
