The workers have produced ____ cotton this year as they did two years ago. [ ]

A. as twice much

B. so much twice

C. twice so much

D. twice as much

有下列( )情形之一的，封闭式基金应当终止上市。

A．基金合同期限届满

B．基金份额持有人不足1000人

C．基金折价率连续20个工作日超过20%的

D．基金份额总额低于核准的规模