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某缓冲溶液的共轭碱的Kb=1.0×10-6,从理论上推算该缓冲溶液的缓冲范围是( )
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Task 4Rewrite the following sentences after the models.Model 1:You are not concentrating on which fork you shoulduse.You are not concentrating on which forkto use.1. He did not know where he should go.2. We have not decided whether we should go there or not.3. I can tell you how you can get to the cinema.
Model 2:Business meals are multi-tasking jobs. Multi-tasking jobs can often turn out to be nightmares.Business meals are multi-tasking jobs which can often turn out to be nightmares.1. Where is the book? I bought the book this morning.2. The teacher will come tomorrow. The teacher teaches you Spanish.3. The woman is our manager. The woman is speaking at the meeting.
哪位历史学家的著作《历史》记录了希波战争的过程？
亚历山大征服波斯帝国的三大战役分别是？
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