Directions Read．the following passage．Answer the questions according to the information given in the passage and the required words limit．Write your answers on your answer sheet．
When I was 10 years old, my friend Sydney was diagnosed with a brain tumor．Sydney fought against it, but the tumor did not respond to treatment, and could not be surgically removed．The mass wrapped around her brain stem, the area of the brain that controls the vital functions of life such as breathing and blood pressure．Sydney died at the age of 11．
After her death, I felt immense sadness and frustration about pediatric cancer．I decided to turn these negative emotions into positive actions．When I was 11 years old．I founded the Pink Polka Dots Guild（PPD） with two friends．The guild is named after Sydney s favorite color and pattern, which represents both the memory of my friend and the guild's positive approach．My goal has been to raise enough money to find a cure for brain cancer, which is the second most common cancer in children．
Over the years, PPD has held fundraisers from lemonade stands to art expositions to golf tournaments．I have played a leading role in planning and organizing each PPD event．The very first Pink Polka Dots event, a garage sale．raised $ 9．000, and our most recent fundraiser, the fifth annual golf tournament, brought in over $ 73．000．The guild progressed faster than I ever anticipated．In five years, we have become 40 members strong, and raised almost half of a million dollars．
I've been shocked by the public recognition that the guild has earned．PPD received an award from a U．S．Senator, spoke at a TED Conference, was featured in Teen Vogue, and appeared on The Note Berkus Show．Each of these honors has raised awareness and money for our cause．
The initiative that I have taken has truly impacted the world of cancer research．PPD has provided start-up funding for scientific discoveries, such as "Tumor Paint", which illuminates cancerous cells so that surgeons can remove them with unprecedented accuracy．The discovery appeared in Time Magazine．, and will be reviewed by the Food & Drug Administration starting in early 2012．1 am extremely proud to have helped fund the research of this life-saving technology．
Pink Polka Dots has inspired me to be an activist．My experience has taught me that with passion and dedication, it is possible to make a difference to the world．The determination that Pink Polka Dots sparked in me has carried over to all aspects of my life, making me a driven academic, a competitive debater and a dedicated volunteer．
1．Why did the author feel sad and frustrated? （No more than 8 words）
                                                                            
2．What was the author s purpose of founding PPD? （No more than 15 words）
                                                                            
3．What achievement has PPD made in helping cancer research? （No more than 13 words）
                                                                            
4．What did the author learn trom his own experience of founding PPD? （No more than 15 words）