题目内容：

（Reuters）--- A Michigan man credited his dog with saving his life by chewing off his diseased big toe as he lay passed out in a drunken stupor(昏迷)

Jerry Douthett, 48, who woke up on a Saturday night in late July in his Rockford, Michigan home to find his Jack Russell Terrier, Kiko, had gnawed off his right big toe.

“The dog always lies with me on the bed”, said Douthett. “That night, I woke up and looked down at my foot, and it was wet. When I looked, it was blood and there was the dog looking at me with a blood moustache.”

Douthett’s wife, Rosee, rushed him to a hospital where doctors found he was suffering from Type 2 diabetes. His toe was badly infected and surgeons amputated(截)the remainder of the toe.

Douthett’s wife, a registered nurse, had been urging him for weeks to have his infected toe examined by a doctor.

On the night Kiko ate his toe, Douthett said he had been out with his wife and drank about six or seven beers and a pair of giant margaritas—big enough to put goldfish in.

“I was self-medicating at this point,” he said. “The moral of the story is that the dog saved my life, because otherwise I would never have gone to see a doctor.”

The couple said they were amazed that Kiko appeared to know Douthett had an infection that needed treatment.

“He kind of chewed off the infected part and stopped at the good bone,” said Rosee. “We joked that we shouldn’t have had to pay the co-pay because he did half the job by chewing off half of the toe.”

1.What does the underlined phrase “gnawed off” probably mean?

A．bit away

B．cared for

C．sucked on

D．smelt out

2.It can be learned from the text that________________.

A．Douthett’s wife was a doctor	B．Douthett’s wife felt something about his disease
C．Douthett never got that drunk	D．Douthett had seen a doctor for his disease

3.From the text we know that Kiko ______________.

A．is in top physical condition	B．was trained at an early age
C．nearly cost Douthett his life	D．saved his master’s life

4.Which is NOT true according to the text?

A．It is hard for the couple to explain the dog’s behaviour

B．Jerry Douthett went to see a doctor because of Kiko’s chewing his big toe..

C．The couple shouldn’t have to pay the co-pay because Kiko did half the job.

D．Kiko didn’t hurt the good bone of its master.