单选题
As the success of this project is {{U}}up to{{/U}} us, we are to double our efforts from now on.
A. dependent on
B. relative to
C. closest to
D. away from
A
B
C
D
【正确答案】
A
【答案解析】
[解析] up to：直到，靠近，由……决定，是……的义务，多达；dependent on：依靠，取决于；relative to：相对于；closest to：离……最近；away from：离开，离
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