Jane, an__ teacher with ____in teaching, had wonderful ____in foreign countries last summer.

A．experiencing, much experience, experiences

B．experienced, many experiences, experience

C．experienced, much experience, experiences

D．experiencing, many experiences, experiences

引起PNH病人血管内溶血的主要成分是（）。

A.血浆

B.免疫球蛋白

C.补体

D.白细胞

E.同种抗体