In English culture anything that may remind an old person of his/her age might be offensive. If you are going to give a present to an English woman in her fifties, which of the following is IMPROPER

A． A bunch of flowers.

B．A bottle of red wine.

C．A box of chocolates.

D． A china god of longevity.

()是由于斜坡上大量滑坡体(土体或岩体)在风化、地下水及重力作用下，沿一定的滑动面向下滑动而造成的。

A．滑坡

B．水土流失

C．地震

D．崩塌