单项选择题

Attempts have been made for nearly three decades to increase the amount of precipitation from clouds by seeding them with salt or silver iodide.

A．Devices
B．Hypotheses
C．Efforts
D．Suggestions
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单项选择题
The Group of Seven, a clique of Canadian artists painting at the turn of the century, has been credited with arousing a widespread awareness of Canada’s rugged landscape.
A．stimulating
B．prolonging
C．glorifying
D．encouraging
单项选择题
A gift to the United States from France, the Statue of Liberty was assembled and dedicated in 1886.
A．repaired
B．brought over
C．unpacked
D．put together
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