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【单选题】
听力原文：M: I thought you were going to call me last night about the plans for the conference on language teaching. W: Sorry, I should have but Tom and Jane stopped by and stayed until midnight. Q: What do we learn from the conversation? (16)A.
The woman had been planning for the conference.
B.
The woman called the man but the line was busy.
C.
The woman didn't come back until midnight.
D.
The woman had guests all evening.
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举一反三
【单选题】—I felt very __________ when I was having classes this morning. —Did you stay up very late last night?
A.
relaxed
B.
sleepy
C.
nervous
D.
sick
【单选题】已知 KMnO 4 浓度为 0.02000 mol/L , 对 Fe 3 O 4 的的滴定度为 ( )
A.
0.5600 g/mL
B.
0.0232 g/mL
C.
0.0112 g/mL
D.
0.0056 g/mL
【单选题】已知0.02000 mol•L-1 KMnO 4 对Fe 2+ 的滴定度为 ( )
A.
5.6000×10 -3 g•mL -1
B.
1.120×10 -3 g•mL -1
C.
0.2240×10 -3 g•mL -1
D.
0.1120×10 -3 g•mL -1
【简答题】Today I felt very u ncomfortable studying English as usual．My eyes were 36 and my mind was confused．I buried my head deep in the great pile of books．Many vocabulary words 37 my mind．As more and more e...
【单选题】已知c(KMnO4)= 0.02000 mol/L,则c(1/5 KMnO4)为( )。
A.
0.02000 mol/L
B.
0.1000 mol/L
C.
0.01000 mol/L
D.
0.004000 mol/L
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