封闭式基金的交易价格主要取决于( )。
A．基金总资产
B．供求关系
C．基金净资产
D．基金负债
参考答案：B
My sister met him at the Grand Theatre yesterday afternoon，so he ________ your lecture.
A．couldn't have attended
B．needn't have attended
C．mustn't have attended
D．shouldn't have attended
简述《玩偶之家》的思想意义。
