More highways have been built in China,___________it much easier for people to trave form one place to another.                            

A．making

B．made

C．to make

D．having made

下列哪种阑尾炎宜采用非手术治疗()

A．急性单纯性阑尾炎

B．慢性阑尾炎

C．急性坏疽性阑尾炎

D．早期单纯性阑尾炎

E．阑尾脓肿症状加重