Oscar the cat seems to have an unnatural ability for predicting when nursing home patients are going to die, by curling up (蜷伏) next to them during their final hours. His accuracy, observed in 25 cases, has led the staff to call family members once he has chosen someone. It usually means the patient has less than four hours to live. "Many family members take some comfort from it. They appreciate the companionship that the cat provides for their dying loved one," said Dosa, a doctor and assistant professor of medicine at Brown University.
The 2-year-old cat was adopted as a kitten and grew up in a third-floor dementia (痴呆) unit at the Steere House Nursing and Rehabilitation Center, where the facility treats people with Alzheimer's, Parkinson's disease and other illnesses. After about six months, the staff noticed Oscar would make his own rounds, just like the doctors and nurses. He'd smell and observe patients, then sit beside people who would end up dying in a few hours. Dosa said Oscar seems to take his work seriously. "This is not a cat that's friendly to people," he said.
"Oscar is better at predicting death than the people who work here," said Dr. Joan Teno of Brown University, who treats patients at the nursing home and is an expert on care for the terminally ill. She was convinced of Oscar's talent when he made his 13th correct call. While observing one patient, Teno said she noticed the woman wasn't eating, was breathing with difficulty and that her legs had a bluish color, signs that often mean death is near. Oscar wouldn't stay inside the room, though, so Teno thought bis streak was broken. Instead, it turned out the doctor's prediction was roughly 10 hours too early. Sure enough, during the patient's final two hours, nurses told Teno that Oscar joined the woman at her bedside.
Doctors say most of the people who get a visit from the sweet-faced, gray-and-white cat are so ill that they probably don't know he's there, so patients aren't aware he's a predictor of death. Most families are grateful for the advance warning, although one wanted Oscar out of the room while a family member died. When Oscar is put outside, he paces and meows his displeasure.
No one's certain if Oscar's behavior is scientifically significant or points to a cause. Teno wonders if the cat senses mysterious scents or reads something into the behavior of the nurses who raised him. Nursing home staff aren't concerned with explaining Oscar, so long as he gives families a better chance at saying goodbye to the dying. The staff recently gave Oscar a wall sign publicly praising his "sympathetic care."
What makes Oscar the cat so special?

A．He observes the cases of dying patients.

B．He curls up next to the patients.

C．He calls family members to the hospital.

D．He senses when patients are to die.

The passage tells us Oscar_____.

A．would go round and observe patients

B．may sometimes fail to predict death

C．is friendly and liked by every nurse

D．was born and grew up in the hospital

The underlined words "his streak was broken" probably mean ____.

A．his bones were severely injured

B．his magic power stopped working

C．his devotion to work got changed

D．his friendship with patients ended

From the passage, we learn that_____.

A．Oscar's behavior is scientifically significant

B．Oscar can read something of the nurses' behavior

C．Oscar might like to stay with the dying patients

D．Oscar is sympathetic to the dying patients

The best title for this passage is "____".

A．Cats Can Be Used for Looking After Patients

B．Oscar, the Sweet-Faced, Gray-and-White Cat

C．As Death Comes Calling, So Does Oscar the Cat

D．Oscar the Cat, the Best Helper of Our Hospital

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