单项选择题

The proposal to lay a telegraph cable from Europe to America made oceanographic studies take on a(n) ______.

A．academic aspect
B．military aspect
C．business aspect
D．international aspect
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单项选择题
It was ______ that asked Maury for help in oceanographic studies.
A．the American Navy
B．some early intercontinental travelers
C．those who earned a living from the sea
D．the company which proposed to lay an undersea cable
单项选择题
The number of the task of Cultural Survival, Inc. mentioned in the passage is ______.
A．4.
B．3
C．2
D．1
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