4.（2011?安徽卷）C
They are the sort of friends who are so close they trust each other with their lives. If one falls, the other is there to catch him.

They are Wellman, whose legs were permanently injured nine years ago in a rock-climbing accident, and Corbett, an experienced rock climber. Together, they climbed up Half Dome, the famous 2,000-foot rock in the Yosemite National Park, through one of the most difficult routes(路線).

During the climb, Corbett took the lead, hit in the metal spikes（尖狀物）that guided the ropes and climbed up. Then, after Wellman pulled himself up the rope, Corbett went down to remove the spikes and climbed up again. This process was repeated time and again, inch by inch, for 13 days. Wellman’s job was not easy either. He got himself up the rope through upper body strength?alone.

In all, Wellman figured that he had done 5,000 pull-ups up the rope on the climb.?

However, when the two men first met, they never talked about climbing. “He knew that was how I got injured.” Wellman said. Until one day Wellman decided that he wanted to climb again and they started training.

Their climb of Half Dome was not all smooth. At one point, pieces of rock gave way, and Corbett dropped down quickly. Wellman locked their rope in place, stopping the fall at 20 feet. His quick action probably saved his friend’s life.

“Your partner can save your life — you can save your partner’s life,” Wellman said as the pair received congratulations from friends. “There are real close ties.”

【文章大意】在現(xiàn)實生活中，不管作什么事情，人人互助就能克服任何困難，甚至挽救生命。Wellman和Corbett的經(jīng)歷恰好印證了這個道理。

64. Which of the following was a challenge for Corbett in climbing Half Dome?
A. To climb up to remove the spikes. B. To climb it twice
C. To do 5,000 pull-ups up the rope. D. To lock the rope in place.

【解析】選B。細(xì)節(jié)理解題。根據(jù)文章可知，C項和D項是Wellman所為，因此排除。根據(jù)第六段可知，Corbett在攀爬之中掉了下去，是Wellman及時固定住纜繩阻止住他下落，他得再次攀爬上去，對他來說這是個最大的挑戰(zhàn)，因此選擇B項。

65. Why did the two men never talk about climbing when they first met?
A. Corbett was poorly trained.
B. Wellman had lost interest in climbing.
C. Corbett didn’t want to hurt Wellman.
D. Wellman hadn’t decided whether to climb again.

【解析】選C。推理判斷題。根據(jù)句子when the two men first met, they never talked about climbing. “He knew that was how I got injured.” Wellman said和…Wellman, whose legs were permanently injured nine years ago in a rock-climbing accident可知，他們沒有談?wù)撆蕩r是因為Corbett不想傷害Wellman這個殘疾人的自尊。A、B、D項沒有提及。

66. What do we know about Wellman?
A. He climbed Half Dome by himself.
B. He was disabled in a traffic accident.
C. He stopped rock-climbing for some time.
D. He was saved by Corbett during the climb.

【解析】選C。推理判斷題。根據(jù)第五段可知，Wellman過了一段時間才決定再次攀巖，于是他們二人共同訓(xùn)練，因此C項正確。A項課文中沒有提及；B項錯在in a traffic accident，應(yīng)為in a rock-climbing accident；D項錯誤，應(yīng)為Wellman挽救了Corbett的生命。

67. The main idea of the text is that .
A. two heads are better than one
B. friendship is precious in life
C. the disabled should never give up
D. a man can be destroyed but cannot be defeated

【解析】選B。主旨大意題。通讀全文可知，Wellman和Corbett通過在攀巖活動中互相幫助，戰(zhàn)勝困難，甚至挽救生命的事跡，歌頌了友誼之珍貴，文末的There are real close ties也能說明C項正確。A項意為“一人不敵二人計”。