--- You didn’t tell your parents the date of our graduation ceremony, did you?

--- No, but I ____. My sister had told them.

A．didn’t need to

B．needn’t have

C．couldn’t have

D．shouldn’t

银杏叶提取物含重金属不得过

A．百万分之

B．百万分之十

C．百万分之二十

D．百万分之三十

E．百万分之四十