下列加粗字的解释无误的一项是[ ]

（1）开天辟地　（2）疲倦不堪　（3）兴高采烈　（4）幽光

A．开辟　　能忍受，能承受　　开采、搜集　　神秘

B．裂开　　忍受，承受　　精神、神色　　深远

C．开辟　　能忍受，能承受　　精神、神色　　幽暗

D．裂开　　忍受，承受　　花样、精彩　　昏暗

At 9 a.m, a hiker was due south of point P. What direction was point P from her position at noon ？（）
(1)From 9 a.m until 11 a.m she walked due east at 2 miles per hour, and from 11 a. m until noon, she walked due north at 3 miles per hour.
(2)At noon, she is exactly 4.5 miles from point P.

A．条件(1)充分，但条件(2)不充分．

B．条件(2)充分，但条件(1)不充分．

C．条件(1)和(2)单独都不充分，但条件(1)和条件(2)联合起来充分．

D．条件(1)充分，条件(2)也充分．

E．条件(1)和条件(2)单独都不充分，条件(1)和条件(2)联合起来也不充分．