天线是将（）与电磁波互相转换的设备部件。
A、低频电能
B、射频电能
C、高频电能
D、辐射电能
参考答案：C
My parents _____ in Hong Kong. They were born there and have lived nowhere else. [ ]
A. live
B. lived
C. were living
D. had lived
意识清楚。兴趣减退。思维迟缓、言浯动作减少
A．情感淡漠B．抑郁状态C．痴呆状态D．脑衰弱综合征E．缄默状态
