计算(-1)2007-(-1)2006的结果是[ ]
A.0
B.2
C.-1
D.-2
答案:D
Recent efforts towards the greening of our cities have achieved much,although the results are still
far from____.
A.uncomfortable
B.suitable
C.accessible
D.satisfactory
在开盘价集合竞价中,高于集合竞价产生的价格的买入申报将全部成交,低于集合竞价产生的价格的卖出申报也将全部成交。()