As is known to all Xi’an was starting point of world – famous Silk Road. A. /; /B. a; aC.

问题补充：

As is known to all ,Xi’an was starting point of world – famous Silk Road.

A. /; /

B. a; a

C. the; /

D. the; the

答案：

A. /; /

B. a; a

C. the; /

(答案→)D. the; the

解析：考查冠词，众所周知，西安是世界著名的丝绸之路的起点。结合语境可知前一空特指某个点，故用定冠词。第二空特指某一条路，故用定冠词。选D。