题目内容
（请给出正确答案）
[主观题]
The aim of the voyages Maury was responsible for in the 1840s was to ______A．make some sou
The aim of the voyages Maury was responsible for in the 1840s was to ______
A．make some sounding experiments in the oceans
B．collect samples of sea plants and animals
C．estimate the length of cable that was needed
D．measure the depths of the two oceans
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