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【单选题】
关于骨组织的细胞的描述,下列哪项是错误的( )A.
骨原细胞是骨组织的干细胞
B.
成骨细胞由骨原细胞分化形成
C.
骨细胞由成骨细胞转化形成
D.
破骨细胞由骨原细胞融合形成
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【单选题】— What _____ you see in the picture? — I can see some flowers. [ ]
A.
must
B.
can
C.
are
D.
do
【单选题】It is considered by some people that to pay to see a movie will be foolish you can see it on TV for nothing.
A.
where
B.
when
C.
however
D.
that
【单选题】—Can you see a bird ___________ the tree? —No, I can't see___________. [ ]
A.
in;any
B.
in;a
C.
on;some
D.
in;some
【简答题】This is a photo a classroom. It’s a big room. In the photo, you can see a table, some . You can see a teacher and two students（学生）, . Three are on the table. A pencil case is on the desk. Two pens and...
【单选题】听力原文：What can you see in the picture? (15)
A.
Football, kite and some books.
B.
I can see three.
C.
No, I can't.
【单选题】What can you see in the picture? [ ]
A.
First water it.
B.
I can't see.
C.
Some flowers.
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