单项选择题
One of the effective ways to lessen environmental pollution is the reservation and protection of more
swamps
.
A. vast thick corals
B. pockets of wetland
C. warm volcanoes
D. millions of bees and wasps
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单项选择题
We will not be held responsible for any damage which results () rough handling.
A. from
B. off
C. in
D. to
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单项选择题
The American basketball team announced that they would not ______ first place to any team.
A．yoke
B．yell
C．yield
D．yearn
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in。
or。
from。
to。
on。