其结果可判定为弱阳性者为：
A．水剂B．水粉剂C．软膏D．油剂E．粉剂
参考答案：B
已知直线l:ax+y-2-a=0在x轴和y轴上的截距互为相反数,则a的值是( )
A．1
B．-1
C．-2或-1
D．-2或1
One minute she burst into______, and the next she burst out _____. We just couldn’t
catch her mood(情绪) at any moment.
A．crying ; laughter
B．crying; laughing
C．tears; laughter
D．tears; laughing
