题目

At first she _____ like math., but now she _____.      A. didn't ; did    B. doesn't ; does   C. didn't ; does   D. doesn't ; did 答案：A甲、乙两条长度相同的铜导线串联后接在电路中，已知甲导线比乙导线粗，则R甲________R乙；通过甲、乙两导线的电流I甲________I乙．（填“大于”、“小于”或“等于”）