______ from other continents for millions of years, Australia has many plants and animals

not found in any other country in the world.[ ]

A. Being separated

B. Having separated

C. Having been separated

D. To be separated

—Did the radio say ________?

—Yes, from Hunan.

A．how the bad rice came

B．where the bad rice came from

C．how did the bad rice come

D．where did the bad rice come from