根据短文理解，选择正确答案。 On a rainy day, about 150 volunteers worked for eight hours to clean up Carson Creek that is near a river. About nine tons of trash was taken out from there.
“We did a good job,” said Alan Specter, the organizer of the event. “We're planning to come back here one more time, three years from now. Of course, we hope that there won't be so much trash next time.”
The trash came in all shapes, sizes, and colors: cans, bottles, bicycles, batteries, furniture, clothing, plastic bags, dolls, and even a golf bag with a full set of golf clubs (球棒).
The dirty and tiring work was done by two volunteering groups — Save the Bay and Watch the Whales. Most of the volunteers came from a local police station and a fire station. And some of them were old people who had already retired (退休).
That day, it rained a little. All of them wore boots, gloves and raincoats. They did the work along a two-mile river with over 500 big yellow trash bags everywhere.
No one found anything that cost much. A five-year-old boy found an earring which he thought might be worth a million dollars. He said he'd sell it. Then he'd donate half of the money to Watch the Whales, and use the other half to buy his favorite ice cream every day.
Many people laughed at the boy's story. However, it was easily found that the environment there did become better.
