【C9】A．life－giversB．care－giversC．law－makersD．trouble－makers

【C9】A．carelessB．caringC．carefulD．care

【C12】A．care aboutB．care forC．care withD．take to

A．care withB．care forC．care ofD．care about

【C4】A．take care forB．care ofC．take care ofD．be careful of

番泻苷A中两个蒽酮母核的连接位置是（)A.C1—C1B.C2—C2C.C9—C9D.C10—C10E.C9—C10

参与溶菌作用的补体成分有( )A.C1~C9B.C3~C9C.C5~C9D.C3 C5~9E.C3~C5