People have always been curious ______ how living things on the earth exactly be

Question

People have always been curious ______ how living things on the earth exactly began.
A. in
B. at
C. of
D. about

Answer 1

答案D
curious常与介词about搭配，构成be curious about，意为“对……感到好奇”。句意：人们总是对地球上生物是如何产生的感到好奇。