If you are about Australian cities, just read the book written by Dr. Johnson.
A. worried
B. anxious
C. upset
D. curious
网友回答
A. worried
B. anxious
C. upset
(答案→)D. curious
解析：句意，如果你对澳大利亚的城市很好奇，就读约翰逊博士写得这本书。Worried担心 anxious焦急的 upset心烦的 curious好奇的，根据题意，故选D。