The state to which the Mayflower sailed is
A. Florida.
B. Maine.
C. Virginia.
D. Massachusetts.
男性，25岁。发热、腹痛半年住院。有时腹泻。粪便细菌培养(一)，纤维结肠镜检查见回盲部呈铺路石样改变，间有沟槽样溃疡，肠腔狭窄
A. 肠结核
B. 结肠息肉病
C. 结肠癌
D. 肠伤寒
E. 克隆病 下列病人的最可能诊断是：
In the early 1850s, with the westward movement, the slavery issue became a serious political issue endangering the unity of the country because______.
A. whether the future states formed as a result of the westward movement should be free or slave would affect the balance of power in the Senate
B. the south insisted that slavery should be allowed to spread into all new territories
C. the north refused to let slavery spread into new territories
D. the north wanted to put an end to slavery
患者男性，35岁，确诊Crohn病1年半，应用SASP、激素、6一MP治疗均无法控制病情，如果医疗条件允许，目前国际上推荐试用下列哪种药物
A. 环孢素A
B. 5一ASA
C. 5一ASA加甲硝唑
D. 5一ASA加肠道微生态制剂
E. infliximab
微信支付 
支付宝支付