单选题
The passage implies that the telegraph cable was built mainly ______.
A、
for Oceanographic studies
B、
for military purposes
C、
for business considerations
D、
for investigating the depths of the oceans
【正确答案】
C
【答案解析】
解析：参见第三段中的“the question what is at the bottom of the oceans had to be answered with any commercial consequence”。
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