What does the word 'advanced' (Sentence 2, ParA.4) refer to?
A.ImproveD.
B.Getting olD.
C.ProgresseD.
D.Complex.

A.4)
B.ImproveD.
B.Getting
C.
C.ProgresseD.

【参考答案】

B
解析：根据advanced后的in age可知，advanced在此应与年龄有关，故B项正确。