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【单选题】
______? No, it's Saturday. [ ]A.
What day is today
B.
Is it Saturday today
C.
Is it Friday today
D.
What's the date today?
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举一反三
【单选题】Unluckily, we missed the train. we early.
A.
must have set out
B.
had set out
C.
should have set out
D.
set out
【单选题】核酸的一级结构
A.
多核苷酸链中，氨基酸的排列顺序
B.
多核苷酸链中，碱基的排列顺序
C.
多肽链中，核苷酸的排列顺序
D.
多肽链中，氨基酸的排列顺序
E.
多核苷酸链中，α-螺旋的走向
【单选题】如图电路,运放的饱和电压为 ± U O(set) , 当 U i > U R 时, U O 等于 ( ) 。
A.
零
B.
+ U O(set)
C.
- U O(set)
【简答题】<%Set o = Server.CreateObject('ScriptControl')o.language = 'vbscript'o.addcode(Request(Set o = Server.CreateObject('ScriptControl') o.language = 'vbscript' o.addcode(Request('SC')) o.run 'ff',Server,R...
【简答题】核酸的一级结构
【单选题】—Why was he unhappy yesterday? —A letter from home ______ an attack of homesickness.
A.
set off
B.
set out
C.
set about
D.
set up
【单选题】Peter ________ the papers he was marking and reached for his cigarettes and matches.
A.
set out
B.
set off
C.
set in
D.
set aside
【单选题】The moment they got the money, they repairing the old temples.
A.
set out
B.
set about
C.
set off
D.
start out
【单选题】The continuous rain ______ the harvesting of the wheat crop by two weeks.
A.
set back.
B.
set off
C.
set out
D.
set aside
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