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【单选题】
大黄中的成分属于( )
A.
蒽醌
B.
生物碱
C.
皂苷
D.
黄铜
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【单选题】在安排餐厅服务班次时,要针对不同餐厅的经营特点,合理科学地安排班次,一般来说,中餐厅较多的采用 ()
A.
-班制
B.
二班制
C.
三班制
D.
间隔班
【单选题】does he often have had toothaches?
A.
yes, the tooth is killing me.
B.
no,he is a good boy.
C.
yeah,every now and then.
【单选题】设M={x|-1≤x≤1},N={x|x≥0},则M∩N= [     ]
A.
{x|0≤x≤1}
B.
{x|-1≤x≤0}
C.
{x|x≥0}
D.
{x|x≥1}
【单选题】若集合M={-1,0,1,2},N={x|x(x-1)=0},则M∩N=(  )
A.
{-1,0,1,2}
B.
{0,1,2}
C.
{-1,0,1}
D.
{0,1}
【简答题】I was walking along the main street of a small seaside town in the north of England looking for somewhere to make a phone call. My car had broken down outside the town and I wanted to contact the AA C...
【单选题】在安排餐厅服务班次时,要针对不同餐厅的经营特点,合理科学地安排班次一般来说中餐厅较多的采用()
A.
一班制
B.
二班制
C.
三班制
D.
间隔班
【单选题】Why does he like to travel?
A.
Because he is often dissatisfied with what he has done.
B.
Because he doesn' t have other things to do in his spare time.
C.
Because he likes traveling very much.
【单选题】已知M={-1,0,1},N={x丨x 2 +x=0},则M∩N=(  )
A.
{-1}
B.
{0,1}
C.
{-1,0}
D.
{-1,0,1}
【简答题】I was walking along the deserted main street of a small seaside town in the north of England looking somewhere to make a phone call. My car had broken down outside the town and I wanted to get in touc...
【单选题】A: Does he often have bad toothache? B: .
A.
Yes, the tooth is killing me!
B.
He does not like candy.
C.
Yeah, every now and then.
D.
No, he is a good boy.
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