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【单选题】
游离核苷酸中,磷酸最常位于核苷酸中戊糖的A.
C5′上
B.
C3′上
C.
C2′上
D.
C2′和C3′上
E.
C2′和C5′上
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举一反三
【单选题】If anyone wants to say something in class, you_____ put up your hands first.
A.
Must
B.
May
C.
Should
D.
Can
【简答题】请登录以下网址并完成题中的任务: http://192.168.30.52:8002 然后将练习页面和成绩2项内容截图或拍照上传。
【单选题】If anyone wants to say something in class, you ________ put up your hands first 。
A.
must
B.
may
C.
should
D.
can
E.
ought
【简答题】阅读理解。 The following form (表格) shows something about some after-class activities in a high school. 100% means all the students, 51-99% means most students, 15-50% means some students and 0% means no st...
【单选题】It is high time, I think, that you got down to ______ something in class.
A.
do
B.
did
C.
doing
D.
does
【单选题】If anyone wants to say something in class, you ______ put up your hands first. [ ]
A.
must
B.
may
C.
should
D.
can
【单选题】We'll have _____ to do in English class. [ ]
A.
something different
B.
different something
C.
anything different
D.
different anything
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