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【单选题】
某日化厂将某品牌的化妆品与护肤品组成成套化妆品，其中，化妆品的生产成本90元／套，护肤品的生产成本50元／套。2007年3月将100套成套化妆品分给职工作奖励。该日化厂上述业务消费税（ ）元。（2008年）A.
2700
B.
4200
C.
4050
D.
6300
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皮皮学刷刷变学霸
举一反三
【单选题】--- Must we go there together? ---______ you ________ he goes there, only one student is needed.
A.
Both; and
B.
Either; or
C.
Neither; nor
【单选题】测定胎儿、胎盘功能最常用的方法是
A.
测定尿中雌三醇值
B.
测定尿中雌激素/肌酐比值
C.
测定尿中绒毛膜促性腺激素
D.
测定尿中胎盘生乳素
E.
测定血液中胎盘生乳素
【单选题】Every one of us must know：________we live can we save the earth.
A.
by changing the way only
B.
only by changing the way
C.
by only changing the way
D.
by changing only the way
【单选题】测定胎儿、胎盘功能最常用的方法是( )
A.
测定血清中妊娠特异性β糖蛋白
B.
测定尿中雌激素/肌酐比值
C.
测定尿中绒毛膜促性腺激素
D.
测定尿中胎盘生乳素
E.
测定阴道脱落细胞
【单选题】听力原文： We must admit that their job is not the most romantic one in the world. We often take dustmen for granted. Perhaps because they usually come very early in the morning, before most people are up,...
A.
Because they are often early risers.
B.
Because they often do their work unnoticed.
C.
Because they were born to do their work.
D.
Because people never stop to talk to them.
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