【单项选择题】
Hearing a（）noise in the backyard, Pamela went there to have a look.
A、A.cracking
B、B.crack
C、C.cracked
D、D.cracker
查看正确答案
A、In positions in which the noises in the ship are least likely to interfere with the hearing of a fog signal and the man can see clearly B、In positions in which the noises in the ship are much likely to interfere with the hearing of a fog signal C、In positions in which the hearing of a signal is reduced to a minimum D、In a position in which the man can see clearly
