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

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热门试题

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

单项选择题

Why does the copper discovered in a native tribe in New Guinea give rise to a problem Because ______.

A．it will soon be mined
B．it will bring money for the tribe
C．it is too for mining
D．the mining of the copper will affect the tribe's religion