—He ______ a piece of waste paper then put it into the rubbish bag.

—We should learn from him. Everyone should do something to protect the environment. [ ]

A. picked up

B. threw away

C. gave away

D. handed in

衡量党的一切工作是非得失的根本标准是( )。

A．提高人民生活水平

B．巩固党的执政地位

C．增强社会主义综合国力

D．实现好、维护好、发展好最广大人民的根本利益