粪块嵌顿在直肠（）。
A.甲基纤维素口服
B.石蜡油口服
C.肥皂水灌肠
D.外科手术
E.半乳糖口服
参考答案：C
Scenario I’m going to describe a situation. Some overseas clients are visiting your company next week. Talk together for about two minutes about the programs that should be arranged. Decide which two you think are important. Here are some ideas to help you. Prompt material · Business meetings · Social activities · Tour of company · Assembly lines · Business lunch arrangement · Company presentation · Sightseeing
“橘生淮南则为橘，生于淮北则为枳 ”，造成这一差异的主要因素是 [ ]
A．市场
B．技术
C．气候
D．劳动力
