单项选择题

The aim of voyages Maury encouraged in the 1840s was ______.

A．to make some sound experiments in the oceans
B．to collect samples of sea plants and animals
C．to estimate the length of cable that was to be made
D．to measure the depths of two oceans

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热门试题

单项选择题

Thirty days after the librarian was given the notice, she had to ______.

A．take her revenge on the company
B．leave her job
C．erase all the company's records
D．admit her mistake

单项选择题

Why are the transactions in many banks claimed to be safe

A．Because they are handled by computers.
B．Because humans are not allowed to operate computers.
C．Because there are no mistakes what so ever.
D．Because computers do not steal money.