单选题It has often been stressed in the Courts that the look-out man should，preferably，be stationed forward，unless weather conditions make this（）.ApossibleBpracticableCimpossibleDprobably
单选题
It has often been stressed in the Courts that the look-out man should，preferably，be stationed forward，unless weather conditions make this（）.
A
possible
B
practicable
C
impossible
D
probably
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