题目

如图，气球与头发摩擦，头发会随着气球飘起来。下列说法正确的是（ ）A．气球与头发摩擦创造了电荷B．气球因摩擦带电而成为导体C．气球若带负电荷，则头发带正电荷D．气球与头发因带同种电荷而互相吸引 答案：【答案】C【解析】A．气球与头发摩擦，使电荷发生了转移而不是创造了电荷，故A错误；B．电子从头发上转移到气球上，而气球得到电子后仍然为绝缘体，故B错误；C．气球若带负电荷，则电子从头发上转移到气球上，即头发失去电子，故头发带正电荷，故C正确；D．气球与头发因带异种电荷而相互吸— How much influence will your time in high school have on the rest of your life?— It ______ be quite a lot, or perhaps only a little. A．mightB．mustC．shouldD．can