单项选择题

Because Bob had stopped reading his technical journals he was ______ of new development in his field.

A．intellectual
B．subtle
C．ignorant
D．tedious
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单项选择题
The plane ______, its bombs exploding as it hit the ground.
A．smashed
B．clashed
C．struck
D．crashed
单项选择题
A．likelyB．possibleC．reluctantD．lonely
A．likely
B．possible
C．reluctant
D．lonely
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