投资收益率表明投资方案在正常生产年份中，单位投资每年所创的( )。
A．年净收益额B．年净收益率C．净资产收益额D．净资产收益率
参考答案：A
.
--- It was a pity that you missed the famous star yesterday.
--- ______ I hadn’t returned to my hometown.
A．except that
B．only if
C．if only
D．even though
