单项选择题

The environmentalists advocated better protection of the earth.

A．appeal
B．pledge
C．proclaim
D．urge
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单项选择题
The class of mammals embraces nearly all warm-blooded animals except the birds.
A．takes on
B．takes over
C．takes in
D．takes up
单项选择题
The doctor said that I had to eliminate alcohol.
A．cut out
B．cut on
C．cut in
D．cut up
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