—I'd like to spend my weekend in upstate NY, but I have some problems with transportation.
A. What if
B. Take your time
C. What a pity
D. It is no big deal
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使用寿命在1000小时以上的灯管有多少支?
A. 22
B. 6
C. 28
D. 48
如果城镇居民与农村居民比例为1:3,则中国人均纯收入为多少?
A. 3260
B. 3259
C. 3176
D. 3902
2000年城镇居民收入比农村居民纯收入多多少元?
A. 2253
B. 4027
C. 4037
D. 2757
1/3,1/5,5/3,3/25,()
A. 75/9
B. 125/9
C. 25/9
D. 125/3