单项选择题

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

A．tedious
B．subtle
C．ignorant
D．intellectual
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The ______ of the sun almost blinded them.
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C．sparks
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A series of strikes have ______ many of the basic industries in that country.
A．crippled
B．damaged
C．changed
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