一般要求避雷器安装在跌落式熔断器和变压器之间，避雷器距离变压器（）越好。
A.越远
B.越近
C.越高
D.越低
参考答案：B
—Our city looks more beautiful!
—Yes. Lots of trees and grass _____ since last year. [ ]
A. have been planted
B. are planted
C. will be planted
D. were planted
妄想（）
A.联想过程缺乏一定方向，概念间缺乏内在联系
B.大脑中反复出现的观念，明知不必要，却摆脱不了，感到非常痛苦
C.以往经验在记忆中大量脱失
D.持续地重复某一单调的语句
E.缺乏事实依据，患者却坚信不移的病理信念
