单项选择题

The meeting was so prolonged and exhausting that ______ the speakers stopped for refreshments.

A. at ease
B. at random
C. at intervals
D. at large
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单项选择题
If you get into a bath full of water., some of the water will ______ onto the floor.
A. overlap
B. overflow
C. flourish
D. flutter
单项选择题
Plastics today contribute to a wide ______ of industries.
A. field
B. area
C. scope
D. range
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