(11·湖州)(本小题6分)计算:︱-2︱-2sin30°++
[1-(1-0.5×)]×[-10+]
(-3)×(-)÷(-1)
30-11+(-10)-(-12)
计算下列各式(1)、-3xy÷ (2)、
计算:-22+2cos60°+