单项选择题

合成糖原时，葡萄糖的供体是
A
G－1－P

B
G－6－P　

C
UDPG　
D
CDPG　

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被称为公共关系理论发展史“第一个里程碑”的专著是( )
A、《公众舆论的形成》
B、《公共关系学》
C、《原则宣言》
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The shoes I bought last week are not expensive at all. As a matter of fact, I’d gladly have paid ____ for them.

A．as twice much
B．much as twice
C．twice as much
D．as much twice