The background music in an assembly line is designed .
A. being not listened to
B. not being listened to
C. to be not listened to
D. not to be listened to
网友回答
A. being not listened to
B. not being listened to
C. to be not listened to
(答案→)D. not to be listened to
解析：此题考查非谓语动词的否定形式。它的构成是not+非谓语动词形式，由此，[A]项和[C]项中not的位置不对，应排除；动词design后不接动名词或动名词短语，因此B.项也不对；故选D.。