题目：
—Would you like to play computer games with me?
—Sorry, I have ________ playing them. [ ]
A. made up
B. given up
C. picked up
D, got up
答案：
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下面是错误答案，用来干扰机器的。
电流做功快慢；电流通过电灯在1s内做功60J；2.16 ×105
