— We plan to go out for a picnic next weekend. Would you like to come along?

— ______. It’s my favourite.

A．Enjoy yourself

B．It doesn’t matter

C．You’re welcome

D．That would be very nice

在急性阿米巴痢疾的粪便中最常见的是

A．包囊

B．大滋养体

C．小滋养体

D．四核包囊

E．未成熟包囊