题目

 ---______Mr. Wood is asking for me? Do you mean _____Mr. Wood elected chairman of the Trade Union? ---I’m not sure. I don’t think I know him. A. /,  the,         B. A, the,          C.  the, the        D. A, a 答案:B有4个关于x方程:(1)x-2=-1            (2)(x-2)+(x-1)=-1+(x-1)(3)x=0             (4)x-2+1x-1=-1+1x-1其中同解的两个方程是(  )A.(1)与(2)B.(1)与(3)C.(1)与(4)D.(2)与(4)
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