As we know,          Potala Palace, a combination of Tibetan construction art and culture, is considered          precious treasure of China.  

A. a; a     B. the; a       C. the; the     D. a; the

As we know,     Potala Palace, a combination of Tibetan construction art and culture, is considered         precious treasure of China.

A．a; a          B．the; a            C．the; the           D．a; the

第二部分：英语知识运用（共两节，满分45分）

第一节 单项填空（共15小题；每小题1分，满分15分）

21. As we know, ______Potala Palace, a combination of Tibetan construction art and culture, is considered________precious treasure of China.

   A．a; a     B．the; a C．the; the     D．a; the

第二部分：英语知识运用（共两节，满分45分）
第一节单项填空（共15小题；每小题1分，满分15分）
21. As we know, ______Potala Palace, a combination of Tibetan construction art and culture, is considered________precious treasure of China.

第二部分 英语知识运用（共两节，满分45分）

第一节  单项填空（共15小题；每小题1分，满分15分）

从A、B、C、D四个选项中，选出可以填入空白处的最佳选项，并在答题卡上将该项涂黑

21. As we know, ____ Potala Palace, a combination of Tibetan construction art and culture, is considered ___ precious treasure of China.

   A. /; a                     B. the; a                C. the; the                    D. the;/