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【单选题】
In a cumulative frequency polygon:A.
the class frequencies are converted to percents.
B.
all of the above.
C.
we add the class frequencies starting with the first class.
D.
the cumulative frequency for the first class limit is zero.
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反馈参考答案：
举一反三
【简答题】苯妥英钠的药理作用及主要不良反应有哪些?
【单选题】—It's getting late. I'm afraid I must be going now:—OK. ______ .
A.
Don't hurry
B.
Wait a moment
C.
Wall slowly
D.
See you
【单选题】听力原文：W: Why don't we drive downtown now? M: Wouldn't it be better to wait after rush hour? Q: What does the man mean? (17)
A.
He's in a hurry to get there.
B.
It would be better to wait an hour for the car.
C.
They should leave later to avoid traffic.
D.
He would rather not drive.
【单选题】听力原文：W: I only want to get a can of juice to my room. M: You don't have to wait in the food line for that. There's a machine near that stack of trays. Where does this conversation probably take place?
A.
At a movie theatre.
B.
At a cafeteria.
C.
At a supermarket.
D.
At a laundry.
【单选题】听力原文：W: I only want to get a can of juice to my room. M: You don't have to wait in the food line for that. There is a machine near that stack of trays. Where does this conversation probably take place...
A.
At a laundry.
B.
At a supermarket.
C.
At a cafeteria.
D.
At a movie theatre.
【单选题】—I’m going to West Lake on vacation. —____
A.
Don’t wait.
B.
I’m sorry to hear that.
C.
Have a good trip!
D.
Bad luck!
【单选题】---- Don’t jump the ______. Go and wait your _____, please. ---- Oh, I’m sorry.
A.
turning; queue
B.
queue; turn
C.
queue; turning
D.
turn; queue
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