单项选择题

The state of California is on ______.

A．the Atlantic Coast
B．the Gulf of Mexico
C．the Pacific Coast
D．Carribean Sea
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单项选择题
The writer thinks that the growth of specialist societies and periodicals had helped scholars to ______.
A．cut down research costs
B．keep up with current developments
C．spend less time travelling
D．develop their ideas more quickly
单项选择题
The writer claims that it is important for specialists to be able to travel because ______.
A．their fellow experts are scattered around the world
B．their laboratories are in remote places
C．there are so many people working in similar fields
D．text books have wide circulation
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