句子写作：TodayatschoolMrMoorebroughtinhispetrabbit.Heshowedittotheclass.

根据对患者人身造成的损害程度，医疗事故分为______

Howmanypartsisanarticleusuallycomposedof?Whatarethey?

Newdriversarefarmore________tohaveaccidentsthanexperienceddrivers.

Whatarethecharacteristicsofgoodwritings?