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【多选题】
中国公共园林自魏晋南北朝时期逐渐形成,它是一种可供大众自由出入、赏的园林形式,其特点包括 ( ) 。A.
规模较私家园林大
B.
用人工的围墙加以限制
C.
建筑不占据突出位置
D.
以整体的山水景观取胜
E.
扬州瘦西湖、绍兴等都是公共园林的范例
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【简答题】英译中（Translate）：chemiosmotic hypothesis（）
【单选题】Constitutional Monarchy was founded in Britain since ____________.
A.
Bill of Rights
B.
the Reformation
C.
the Restoration
D.
the Civil Wars
【单选题】Last month I came to Britain. My English has improved a lot _____ I use it all the time. [ ]
A.
since
B.
while
C.
when
D.
as
【简答题】化学渗透学说( Chemiosmotic theory)
【多选题】How did chemiosmotic processes evolve in stages?
A.
The first stage might have involved the evolution of an ATPase (pump) that pumped protons out of the cell using the energy of ATP hydrolysis. Such a proton pump could have been the ancestor of present-day ATP synthases.
B.
Stage 2 could have involved the evolution of a different proton pump, driven by an electron-transport chain. Indeed, some present-day bacteria that grow on formic acid use the small amount of redox energy derived from the transfer of electrons from formic acid to fumarate to pump H + .
C.
Stage 3 could then link these two systems together to generate an ATP synthase that uses the protons pumped by the electron-transport chain to synthesize ATP.
D.
An early cell with this final system would have had a large selective advantage over cells with neither of the systems or only one.
【简答题】Beijing had its biggest snowfall since 1951. Britain is suffering through its longest cold snap (寒潮) since 1981. And freezing weather is hitting the Deep South, including Florida’s orange groves and b...
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