单项选择题

Some minerals are quite common, others are regionally _________, and still others are rare on the earth.

A．attributed
B．distributed
C．contributed
D．scattered
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单项选择题
Since the most commonly accepted test is the TOEFL exam, most institutions will expect a _________ TOEFL score for admission.
A．minimal
B．maximal
C．mimimum
D．maximum
单项选择题
The three astronauts have splashed down in the Pacific Ocean, only six miles from the aircraft carrier that was _________ for the recovery mission.
A．dispatched
B．deposited
C．deployed
D．delivered
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