grandmother，who lost her battle with cancer in 2012，and her death is the very reason and the driving force behind the Clara Lionel Foundation (CLF)"可知，在2012年，祖母不敌癌症病魔而去世，这促使作者成立了克拉拉·莱昂内尔基金会(CLF)。据此可知，是作者的祖母患癌症去世这件事促使了作者成立并发展了克拉拉·莱昂内尔基金会(CLF)，故B项正确。

　　3．What does the underlined word "one" in Paragraph 2 refer to?

　　A．A chance. B．A task.

　　C．A life. D．An organization.

　　答案与解析：C　考查代词指代。根据第二段的最后一句"And at CLF，our mission is to impact as many lives as possible，but it starts with just one"可知，在克拉拉·莱昂内尔基金会中，我们的任务是尽可能影响更多的生命，但这个任务从影响一个人的生命开始。根据该句中的"as many lives as possible"，结合"but... just one"可知，画线词one指代"a life"，故C项正确。

　　【干扰项分析】A项意为"一个机会"，B项意为"一项任务"，D项意为"一个组织"，都与语境不符。

　　4．What does the author suggest people do in the last paragraph?

　　A．Do little things to help those around them.

　　B．Work hard to get a college education.

　　C．Challenge their friends to offer help.

　　D．Do charity work whoever you are.

答案与解析：A　考查推理判断。根据第三段中的第五句"But it starts with your neighbor，the person right next to you，the person sitting next to you in class, the kid down the block in your neighborhood"可知，慈善帮助可以从帮助你的邻居开始，帮助现在在你身边的人开始，