1 . Kyle Cassidy and three other members of the Annenberg Running Group were stretching on the grounds of the University of Pennsylvania, waiting for a few slow members to start. The Penn colleagues and other community members meet three days a week for a roughly 30-minute jog and an occasional lecture. It's not your normal exercise chatter—during some runs, one of them delivers a talk; the topics range from the brain to Bitcoin（比特币）.
But on this day last January, it would not be their normal run. The first sign was the man who ran past them very fast. "Probably running a 7:15 pace（per mile）," Cassidy thought admiringly.
Cassidy discovered why the man was so fast at running when another man ran by, yelling "Help! He took my phone!"
Hearing that, the group did what running clubs do: They ran, chasing the suspect down the streets until he quickly hid in a construction site. The runners split up. Cassidy ran around to the far side of the site to cut the thief off while the others wandered the neighborhood hoping he had abandoned the stolen phone in a backyard.
No luck. Then they asked the residents whether they'd seen the guy. When they knocked on the door of one house, they were in for a surprise. They didn't know the thief had already come out of the construction site and was hiding behind a bush by that very house. As the owner opened the door, the suspect suddenly rushed out from behind the bush and right into the arms of the campus police, who had joined the chase shortly behind the runners.
The members of this running group are not passionate（狂热的）runners. But they do understand the benefit of a little exercise. "Running is typically a useless sport where you turn fat cells into heat," Cassidy said. "But occasionally it can be useful, and here was one of those opportunities."
1. What does the running group do at times while exercising?| A．Share ideas. | B．Talk nonsense. |
| C．Help search for lost things. | D．Play with their smartphones. |
| A．Confused | B．Frightened | C．Motivated | D．Impressed |
| A．gave up. | B．stayed up. | C．got separated | D．ran away. |
| A．It's very important to keep fit. |
| B．Exercising can be socially beneficial. |
| C．Whatever you do, you should do your best. |
| D．Teamwork is more important than individual skills. |
