Wang Hao and Chu Yafei led China to________gold and silver finish in________20kilometer walk,the

first athletic event at the Asian Games. [      ]

A. a; the    

B. the; a    

C. 不填;  a    

D. 不填;  the

胃、十二指肠溃疡穿孔非手术治疗期间最关键的措施是

A．禁食

B．胃肠减压

C．补液，纠正水电解质紊乱

D．严密观察病情

E．半卧位