_____writer is better known in China, Charles Dickens or Mark Twain?

A．Whichever

B．Whether

C．What

D．Which

Questions 1-4

Why do people participate in the activities of a study circle？（）

A．To study a subject or to join in a cultural activity.

B．To become a member of the government appointed by the parliament.

C．To demand more financial support from the government.

D．To upgrade their knowledge at school.