民间文学的个体传承人的传承渊源有（）。
A.亲缘传承
B.师缘传承
C.业缘传承
D.地缘传承
E.血缘传承
参考答案：A, C, D
He hurried to the railway station, _____ buying a ticket for her daughter. [ ]
A. with the purpose of
B. on purpose of
C. by purpose of
D. at the purpose of
每日工作完毕后,必须将油箱加满,以免油箱中空气、水分凝结。
