如果广播喇叭太少，扩音机输出功率还有多余，就必须用（）把多余的功率吸收掉。
A.变压器
B.假负载
C.电容
D.衰耗器
参考答案：B
—Perhaps, what I steal (偷) on the Happy Farm is not vegetables. That is "loneliness".
—________ This year"loneliness" is very popular. [ ]
A. I don't think so.
B. I quite agree with you.
C. That's a good idea.
D. I'm not sure if you are right.
简述课外活动的特点。
