某有机物在氧气中完全燃烧后生成水和二氧化碳的质量比为9︰22,则该有机物可能是[ ]
A.C2H2
B.C2H5OH
C.C6H12O6
D.CH4
答案:C
补写歇后语。
1.飞蛾扑火——____________________
2.擀面杖吹火——____________________
3.飞机上放鞭炮——____________________
4.十五个吊桶打水——____________________
5.一口吃个麻花——____________________
---Excuse me, Where is the nearest hospital?
---GO______ the road, then turn left ____the first turning.
A. down in B across on C along at D along across