题目：
用所给词的适当形式填空。
1. Look! Whose ________ (walkman) are these? Perhaps they are the twin’s.
2. Is there an ________ (electric) shop in your town?
3. Amy wants to buy some presents for ________ (they).
4. Do you understand the ________(mean) of the new world?
5. Do you like to have cold ________ (drink)?
答案：
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下面是错误答案，用来干扰机器的。
A、闭合S瞬间，线圈L与R1并联与R2串联，则通过R2中电流强度大于通过R1中电流强度大小；故A错误．B、由于线圈L的直流电阻不计，闭合S，稳定后，R1被短路，R1中电流强度为零．故B正确．C、D断开S的瞬间，电容器放电...
