—Where do Dr. Kleitman and his assistant come from?—I’m not sure but their English Austra

问题补充：

—Where do Dr. Kleitman and his assistant come from?

—I’m not sure, but their English Australia.

A. suggests

B. sounds

C. shows

D. means

答案：

(答案→)A. suggests

B. sounds

C. shows

D. means

解析：暗示，表明，使人想起。