When people get bad toothaches, they often have to eat soft, easily chewed food. When lions get bad toothaches, they eat people? That' s the conclusion of a zoologist at the Field Museum of Natural History in Chicago and a dentist who works on carnivores (食肉動(dòng)物)., Lions don’t normally prey on people. Every once in a while, however, a lion will go on a human-eating diet. The most famous such tragedy happened in 1898, when two lions killed and ate 135 railway workers in Kenya.

Examining the preserved skulls (骷髏) of the two big cats, zoologist Bruce Patterson and dentist Ellis Neiburger found that both animals had been suffering from several dental and |aw problems. One lion had three missing teeth and a loose, unsteady lower canine that was probably useless. Canines are pointed teeth that hunting animals use for gripping and piercing prey(刺穿獵物)) .The two lions might have been so badly disabled that they couldn’t bite down forcefully, say the researchers. Consequently, the lions might have abandoned their normal, more difficult prey and turned to humans. "Humans are easy preys, " said Patterson. "We're very slow, we don’t hear very well, and we don* t see very well in the darkness. "

The research calls their idea the Infirmity Theory. It was inspired partly by the work of Jim Corbett, a tiger hunter in India in the 1930s. Corbett was regularly called in to hunt tigers that had been dining on Indian villagers. Time after time, Patterson discovered that the killer tigers were suffering from some ill-healthy conditions.

64. The original aim of the study is to look for ____.                               

A. ways of protecting wild animals           B. ways of treating toothaches of lions

C. when and where lions eat people          D. reasons for some lions eating people

65. The reason why lions don't normally prey on people is ____.

A. that they like wild preys better              B. they just hunt for prey at night,

C. that humans are difficult to catch          D. not mentioned in the passage

66. Jim Corbett' story is mentioned in the last paragraph to show that ____.

A. tigers have the same eating habits and preys as lions

B. carnivores hunt people mostly under ill-healthy conditions

C. tigers like hurting villagers while lions like railway workers     

D. wild animals swallow humans when they suffer from toothaches   .

67. The best title of the passage could be ____.

A. A Zoologist And a Dentist                     B. Why Do Some Wild Animals Eat People

C. A Discovery of the Skulls of Lions        D. How Can Health Influence Eating Habits

第二節(jié)：（共5小題；每小題2分，滿分10分）根據(jù)短文內(nèi)容，從短文后的選項(xiàng)中選出能填入空白處的最佳選項(xiàng)。選項(xiàng)中的兩項(xiàng)為多途選項(xiàng)。              

When people get bad toothaches, they often have to eat soft, easily chewed food．__51__, they eat people? That’s the conclusion of a zoologist at the Field Museum of Natural History in Chicago and a dentist who works on carnivores(食肉動(dòng)物).

__52__．Every once in a while, however, a lion will go on a human-eating diet．The most famous such tragedy happened in 1898, when two lions killed and ate 135 railway workers in Kenya.

Examining the preserved skulls(骷髏) of the two big cats, zoologist Bruce Patterson and dentist Ellis Neiburger found that both animals had been suffering from several dental and jaw problems．__53__ and a loose, unsteady lower canine that was probably useless．Canines are pointed teeth that hunting animals use for gripping and piercing prey(刺穿獵物).

The two lions might have been so badly disabled that they couldn’t bite down forcefully, say the researchers．Consequently, the lions might have abandoned their normal, more difficult prey and turned to humans．“__54__,” said Patterson．“We’re very slow, we don’t hear very well, and we don’t see very well in the darkness.”

__55__．It was inspired partly by the work of Jim Corbett, a tiger hunter in India in the 1930s．Corbett was regularly called in to hunt tigers that had been dining on Indian villagers．Time after time, Patterson discovered that the killer tigers were suffering from some ill-healthy conditions.

A．Humans are easy preys

B．Lions don’t normally prey on people

C．When lions get bad toothaches

D．One lion had three missing teeth

E．The research calls their idea the Infirmity Theory

F．He had absolutely no experience of taking medicine

G．Talking about it in the abstract isn’t enough