下面是一名学生所做的4道练习题：①（-3）0=1；②a3+a3=a6；③4m-4=14m4；④（xy2）3=x3y6，他做对的个数是（）A．0B．1C．2D．3-数学

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• It is a great gift for him and the whole family ___,A．as well asB．alsoC．as goodD．as well-英语
• The passengers were robbed________all their money in broad daylight.[ ]A. ofB. offC. fromD. away-高三英
• （1）解方程：x2-2x-1=0．（2）计算：(48-418)-(313-20.5)（3）计算：-42+|2-2|-(2002-3)0+11+2．-数学
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