______ plenty of fun things to do if you choose the travel path. [ ]

A. There are going to have    

B. There is going to be  

C. There will be            

D. There will have

下列人类活动将会对环境造成危害的是  [ ]

A．大力发展生态农业

B．对生活垃圾进行分类回收和再利用

C．为改善卫生状况，生产一次性餐具

D．建立自然保护区，保护生物多样性