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

What competition was carried out recently in Britain

A．A competition among schoolchildren.
B．A competition in industry.
C．A competition called British Designers for Tomorrow.
D．A competition among the teachers.

单项选择题

A valid identification card can be used to ______.

A．take intercampus buses
B．read announcements
C．make use of the recreational facilities
D．obtain the next issue of the student newspaper