题目

I visited many places including the History Museum last Saturday. When I _______ at the hotel, it was very late. A . got B . reached C . arrived D . went 答案：C 已知异面直线a与b所成角为，P为空间一定点，则过点P且a与b所成角都是的直线有且仅有 [　　] A．1条 B．2条 C．3条 D．4条