肠重复畸形的好发部位为
A.空回肠
B.胃
C.结肠
D.十二指肠
E.食管
参考答案:A
Duty is an act or a course of action that people _____ you to take by social customs, law or religion. [ ]
A. persuade
B. request
C. instruct
D. expect
光合作用包括 [ ]
A.物质转化过程
B.能量转化过程
C.A和B两个过程
D.吸收光能和二氧化碳