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【单选题】
下列实验操作正确且能达到预期目的的是 实验目的 操作A.
比较乙醇中羟基氢的活泼性强弱 用金属钠分别与乙醇反应
B.
欲证明CH 2 =CHCHO中含有碳碳双键 滴入酸性KMnO 4 溶液，看紫红色是否褪去
C.
确定碳、氯两元素非金属性的强弱 测定同浓度的Na 2 CO 3 和NaClO水溶液的pH
D.
欲除去苯中混有的苯酚 向混合液中加入浓溴水，充分反应后，过滤
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【单选题】听力原文：When are you leaving for work? (A) I'll leave after breakfast. (B) I plan to retire next month. (C) I've been working for ten years. (13)
A.
B.
【简答题】I plan to leave for Shanghai on an early morning flight.
【单选题】It was very hard for me to make a , but I decided to leave my job. A .suggestion B. decision C. plan D. speech
A.
1
B.
2
C.
3
D.
4
【单选题】I plan to leave on September 10th so I have to make airline _________ for that date.
A.
repayment
B.
retire
C.
reservation
D.
requirement
【单选题】It was very hard for me to make a but I decided to leave my job.
A.
suggestion
B.
decision
C.
plan
【单选题】It was very hard for me to make a_____,but I decided to leave my job.
A.
suggestion
B.
decision
C.
plan
D.
speech
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