多选题 Years of ______ lifting of heavy furniture had left him too ______ to be able to stand erect for long periods of time.

A、 strenuous
B、 facile
C、 stingy
D、 dumbfounded
E、 distracted
F、 debilitated

【正确答案】 A、F

【答案解析】[解析] ●too...to...说明前后反义重复。
●第二空与be able to stand erect for long periods of time(能够长时间站立)反义重复。dumbfounded目瞪口呆的，distracted不安的，debilitated虚弱的/疲惫不堪的。答案选F。
●strenuous费力的，facile表面的，stingy极少的。代入选项，答案选A。