小肠的结构特点是()
A、上连胃幽门、下与盲肠相连
B、起端接十二指肠、末端接盲肠
C、起端接胃的贲门部
D、全长约10-12米
参考答案:A
()是利用各种会议介绍和宣传组织。
A、会议报告
B、集会演说
C、介绍性演讲
D、游说
Tennis star Chris Evert, who retired from the game after eighteen years, perhaps more than anyone to make women’s professional tennis a widely respected career. A. who did B. has done C. and doingD. to do