单项选择题

Because of the great speed of light, we see a lamp light up almost at the exact moment ______.

A. we turn it on
B. when we turn on it
C. that we turn on it
D. which we turn it on
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单项选择题
The new underground railway will ______ the journey to all parts of the city.
A. consume
B. eliminate
C. formulate
D. facilitate
单项选择题
All the communists ______ the people instead of being served by the people.
A. are supposed to serve
B. are opposed to serving
C. are subjected to serving
D. object to serving
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