单项选择题

This passage is mainly about ______.

A．the beginning of oceanography
B．the laying of the first undersea cable
C．the investigation of ocean depths
D．the early intercontinental communications

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单项选择题

Which of the following is TRUE about the hours of the library

A．It will only be open on the weekends.
B．It will be open both weekends and weekdays.
C．It will shorten its hours on weekdays.
D．It is not mentioned.

单项选择题

The main purpose of the passage is to ______.

A．inform university people of important schedule changes
B．announce the new movies on weekends
C．remind students to use the new library services
D．tell campus personnel of their identification cards