D．The author asked Frank to travel and he took his advice.

答案　C

解析　推理判断题。从第二段中的"He asked if I smoked，which I did，and begged me to stop. He told me smoking was what was killing him."可以推断出Frank的肺出了问题。故选C。

8．We can learn from the text that the author________.

A．took down Frank's name and address to visit him in person

B．was warmly welcomed by his customers when he called them

C．didn't stop smoking even though Frank asked him to

D．kept in touch with Frank through letters until he died

答案　D

解析　细节理解题。从第三段中的"We continued to write back and forth over the next few months..."及第四段中的"About a year later I received a letter from his wife."可知，作者和Frank保持联系，一直到他去世。故选D。

　　Health experts are calling for action to expand cancer care and control in the developing world. A medical research paper says cancer was once thought of as a problem mostly in the developed world. But now cancer is a leading cause of death and disability in poor countries as well. Experts from Harvard University and other organizations ask the international community to fight cancer positively，saying it should be fought in the way AIDS has been fought in Africa.

　　Cancer kills more than 7.5 million people a year worldwide. Almost two­thirds are in low­income and middle­income countries.

　　They discover cancer kills more people in developing countries than AIDS，tuberculosis(肺结核) and malaria(疟疾) combined. But the world spends only 5% of its cancer resources in those countries.

　　Felicia Knaul from Harvard Medical School was one of the authors of the paper. She was in Mexico when she was found to have breast(乳腺) cancer. She received treatment there and her experience showed her the sharp difference between the rich and the poor in treating breast cancer.

Felicia Knaul says，"And we are seeing how this is attacking young women. It's the number