( )的主要表现是业主要求承包商提供履约保证和预付保证。
A．合同转移
B．第三方担保
C．保险转移
D．业主将合同责任和风险转移给对方当事
参考答案：B
----- What do you think of the performance we saw last night, Jenny?
----- ______ I want to see it a second time．
A．That couldn’t be worse! B．It could be better
C．That couldn’t be better! C．It was just so-so．
广告对媒介的主要作用？
