单项选择题

Starfish (cling to) stones by the suction of their innumerable tube feet.

A．attract
B．destroy
C．swim over to
D．hold fast to
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单项选择题
The workers finally (called off) the strike.
A．put off
B．ended
C．cancelled
D．participated in
单项选择题
A (bare) hill appears behind the jungle.
A．bald
B．humid
C．immense
D．level
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