单项选择题

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

<上一题目录下一题>

热门试题

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

Defied in the fifth paragraph probably means （） .

A．doubled
B．gave proof to
C．challenged
D．agreed to