【单选题】What made a lot of large animals disappear in the past?
A.
Original vegetation cut down or burned.
B.
Habitats fragmenting and animals homeless.
C.
Hunting unchecked and without supervision.
D.
Mining, logging ,and energy exploration.
【判断题】根据波特五力模型,对酒店业来讲,社会餐饮、Airbnb、民宿、农家乐、房车等快速兴起,成为威胁传统酒店的替代品。
【单选题】What is the worst thing about the job of a sales representative?
A.
He must see a lot of customers.
B.
He has to do a lot of research.
C.
He has to be away from home a lot.
【单选题】已知有以下定义: int i = 0; const int ic = 32; int *const p1 = &i; const int *p2; const int *const p3 = 以下说法错误的是________。
【判断题】根据波特五力模型,对酒店业来讲,社会餐饮,airbnb,民宿,农家乐,房车等快速兴起,成为威胁传统酒店的替代品
【单选题】()是指避免了用户各自建立应用文件,维护了数据的一致性。 P45
【判断题】根据波特五力模型,对酒店业来讲,社会餐饮、 Airbnb 、民宿、农家乐、房车等快速兴起,成为威胁传统酒店的替代品。