已知在△ABC中，两个内角的度数分别为40°和70°，则这个三角形是[ ]

A．直角三角形    

B．等边三角形  

C．钝角三角形    

D．等腰三角形

You had better book rooms at the hotel in advance       you should find no room on your arrival.

A．so that

B．even if

C．in case

D．now that