欲从苯酚的乙醇溶液中回收苯酚,有下列操作:①蒸馏;②过滤;③分液;④加入足量的金属钠;⑤通入过量的CO2;⑥加入足量的NaOH溶液;⑦加入足量的FeCl3溶液;⑧加入足量浓溴水;⑨加入适量盐酸。合理的步骤是 ( )
Many modern trains in the world_____in Zhuzhou.( )
A.are creatingB.created
C.are created
Polly has been ill for three days but she is a lot_____today.( )
A.bestB.betterC.good
People remember the first traveler from England____came to live in America.( )
A.whichB.whereC.who
He likes watching the fifth channel._____channel is about sports.( )
A.AnB.TheC.A
We are not allowed to laugh when we_____.( )
A.ateB.have eatenC.are eating