若Sn是等差数列{an}的前n项和，其首项a1＞0，a99+a100＞0，a99

Dana Cummings was in his thirties before he first went surfing. But, even more interesting is that Dana Cummings chose to learn the sport after losing a leg in a car accident. Now, nine years later, he helps other disabled (伤残的) people learn how to ride the waves in AmpSurf.

On the coast of Maine, he is working with 27-year-old Matthew Fish, who is partly blind. Cummings takes hold of Fish and leads him into the ocean. The surfboard floats next to them. Fish lies on the surfboard. He tries to stand up on it. After a few attempts (尝试) he is up and riding all the way back to land. “That was exciting,” Fish says.

A car accident in 2002 took Dana Cummings’ leg. He says the crash changed him more than just physically. “Losing my leg made me realize how precious (珍贵的) life is and get off the couch and start living. I do more things now than I ever did before. Next week I am going to compete in a contest in Hawaii,” Dana says.

One year later Dana Cummings formed AmpSurf. AmpSurf is a group that volunteers to hold surfing classes and events for people with all kinds of disabilities.

Recently, AmpSurf took its training programs to the East Coast. Eleven students attended the class in Maine. They came from all over the northeastern United States.

Dana Cummings thinks AmpSurf can change the way a disabled person thinks. “Most people with disabilities consider himself or herself unlucky and useless, but we want them to see what they can do. Who cares you lose your leg or you are blind, whatever? Have fun. Just enjoy life. Take the most advantage of it you can,” Dana says.

小题1:Matthew Fish thinks learning to ride the waves is _____.

A．boring

B．easy

C．interesting

D．difficult小题2:When did Dana Cummings set up AmpSurf according to the text?

A．In 2002.

B．In 2003.

C．In 2008.

D．In 2011.小题3:According to Dana Cummings, AmpSurf can _____.

A．ease the physical pain of the disabled

B．help the disabled learn to get used to their life

C．change the attitude of the disabled towards life

D．make the disabled pay more attention to their disabilities小题4:What is the best title for the text?

A．Dana Cummings — a great surfer

B．AmpSurf — a training group

C．How to learn to live with disabilities

D．Disabled surfers ride the waves

在人民币资金与外汇资金的转化中，所需人民币资金主要来自（）。

A、企业积累

B、财政投资

C、银行贷款

D、发行债券

产品质量认证是第三方认证机构依据特定标准和要求，按照一定的程序对特定产品是否满足相应规定要求而给出书面证明（颁发认证证书和标志）的活动。

确定土地所有权条款内容不包括______。

A．确定土地所有权应注意的问题
B．国家土地所有权的确定
C．确定国有土地所有权
D．确定土地所有权的历史沿革

县级人民政府民政部门经审查，对不符合享受城市居民最低生活保障待遇条件的，可以书面或口头通知申请人。