腹腔干和肠系膜上动脉的直接分支不包括 ( )
A.肝总动脉
B.胃左动脉
C.回结肠动脉
D.胃右动脉
E.脾动脉
参考答案:D
— I want to teach in Tibet when I graduate from the college.
— Me too. Teachers ______ very much there. [ ]
A. need
B. are needing
C. are needed
何谓不确定分析?主要包括哪些方法?