问题
单项选择题
The port gang way caught on a（）on the wharf and was severely damaged.
A.bollard
B.bitt
C.stem
D.keel
答案
参考答案：A
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The port gang way caught on a（）on the wharf and was severely damaged.
A.bollard
B.bitt
C.stem
D.keel
参考答案：A