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

A．an academic aspect
B．a military aspect
C．a business aspect
D．an international aspect

单项选择题

What is the author's attitude towards the environmental effects of pesticides

A．Pessimistic.
B．Indifferent.
C．Defensive.
D．Concerned.