Mr. Zhao Jiping, _____ composer from Shaanxi Province, was elected _____ chairman of the Chinese

Musicians Association, a national professional trade organization whose mission is to provide a forum

for the advocacy of Chinese music and to promote public awareness of music. [ ]

A. a; the

B. the; a

C. a; 不填

D. the; 不填

为确保基坑安全，监测点宜布置在支撑受力（）、（）的支撑上。

A、较大、较复杂

B、较小、较复杂

C、较大、较简单

D、较小、较简单