解析：B'词义猜测题。根据前后的句子可知，攀岩是测试耐力的一种低强度的运动，在攀爬过程中消耗了能量但对关节影响不大，故答案选B项。

　　3. What do we know about climbing according to the passage?

　　A．It encourages children to be good climbers.

　　B．It's an extreme sport which only super­fit people can join in.

　　C．It requires your eyes and hands to cooperate with each other.

　　D．It tests more about physical condition than mental abilities.

　　解析：C'推理判断题。根据第五段最后一句This activity also develops their eye­hand coordination as they perform their climb可知，答案选C项。

　　4. What may the next paragraph talk about after this passage?

　　A．What technique children need to climb rocks.

　　B．What more advantages climbing has for children.

　　C．How much strength people need to climb rocks.

　　D．What training classes there are to teach children.

　　解析：A'推理判断题。根据文章最后一段最后一句However, good technique is more necessary than strength when doing this sport可知，文章后面会写攀岩的技巧。

Ⅲ.完形填空

　　 My mother used to be controlling and our relationship was difficult. As she got older, she __1__ to soften. Just five years ago, I got a call at 5：30 a．m. from Hawaii saying my mother was in the __2__ room with a high fever and fast heart rate. When I was __3__ planes in San Francisco, I got a call from my mother's __4__， who was also my friend. She said, "__5__ you get here, don't go to the hotel first. Come __6__ to the hospital. I think we're looking at hours now." I said, "Chery, I have a 6­hour __7__ ahead of me. Please __8__ in her ear that I'm coming, and she'll __9__." Chery did. My mother waited. I __10__ Hawaii, and held her hand for the next 8 days.

During that time our relationship was __11__. She could no longer __12__ anything. We sat, talked, and she __13__ sang to me. Because everyone thought she was __14__， I said all the things I thought I might never have the __15__ to say again. I told her I loved her, and how much I __16__ all she'd done for me.