Seldom ____ as lonely as now, though I have been living in this house for more than 20 years.

A have I felt     B I have felt      C I had felt      D had I felt

神话起源的以下诸说中，比较通行的解释是（）。

A.劳动说

B.巫术说

C.游戏说

D.宗教说

E.进化说