溶组织内阿米巴主要侵入肠道何部位并引起疾病
A．小肠
B．空肠
C．结肠
D．回肠
E．十二指肠
参考答案：C
解析：溶组织内阿米巴主要侵入结肠并引起疾病。
简述机关文件归档范围的主要内容。
The China Travel Service (or the CTS) (中国旅行社，简称“中旅社”), the first travel service of New China, is now one of the key elements in China’s travel industry. It boasts the largest travel service with the most complete and fully-functioning network in the country. Currently the CTS group has over 200 subordinate travel services, 117 hotels, 46 duty free shopping centers and 62 tourist service companies all over China.
