题目内容：

April 4th was just another day on a Western Australia farm for Zac Mitchell, until it suddenly wasn’t. In an unexpected accident, the cattle worker was feeding the animals in his charge when one bull cleaned him up and kicked his hand up against the rail, resulting in the thumb on his right hand being cut off. “My thumb was still hanging on the rail... when I got up off the ground,” Zac Mitchell says.

His co-workers tried their best to preserve the thumb for reattachment, placing it on ice in a cooler, but two surgeries to put Mitchell’s thumb back in place failed. That’s when doctors came up with another suggestion: Remove one of his big toes to where his thumb used to be.

Mitchell’s lead surgeon, Sean Nicklin, understood the man’s dilemma at first, calling it a “bit of a crazy idea”. After all, Zac Mitchell did not want to be injured in another part of his body. But as the thumb is incredibly important function-wise, Mitchell eventually gave in. Nicklin explains that the big toe is surprisingly fit for a thumb switch: Nerves sync up (同步) nicely, and it looks more like a thumb, though a giant one, than any other alternative they may have come up with. He added that big toes aren’t as necessary for balance and walking as people believe. As far as the foot goes, occasional “fine balance” activities like surfing might be difficult, but most people without a big toe function fine in everyday tasks like walking and even competitive sports.

The eight-hour surgery went well, and Mitchell is expected to have a year or so of recovery in front of him before he heads back into the fields.

1.What happened to Zac Mitchell on April 4th?

A. He cleaned up a bull.    B. He was badly hurt.

C. He started his farm.    D. He lost his thumbs.

2.What suggestion did the doctor give to Mitchell after the unsuccessful surgery?

A. Recreating a new thumb in place.

B. Replacing the thumb with his toe.

C. Transplanting his co-worker’s thumb.

D. Putting back the cut-off thumb again.

3.What is Mitchell’s first attitude to the doctor’s another suggestion?

A. Optimistic.    B. Insignificant.

C. Hesitant.    D. Rejective.

4.According to Nicklin, after the surgery Mitchell is able to       .

A. surf on the sea    B. do daily activities

C. only stay at home    D. work on wheelchair