4. He is _____, but he doesn't feel _____. Because he likes to surf the Internet for his study of English.

A．lonely; alone

B．alone; lonely

C．alone; alone

D．lonely; lonely

《国务院关于实行最严格水资源管理制度的意见》中提出，到2030年主要污染物入河湖总量控制在水功能区纳污能力范围之内，水功能区水质达标率提高到（）以上。

A、90%

B、95%

C、98%

D、100%