[单项选择]

He has been called the "missing link." Half-man, half-beast. He is supposed to live in the highest mountain in the world - Mount Everest.
He is known as the Abominable Snowman. The (41) of the Snowman has been around for (42) . Climbers in the 1920s reported finding marks like those of human feet high up on the side of Mount Everest. The native people said they (43) this creature and called it the " Yeti, " and they said that they had (44) caught Yetis on two occasions (45) none has ever been produced as evidence(证据).
Over the years, the story of the Yetis has (46) . In 1951, Eric Shipton took photographs of a set of tracks in the snow of Everest. Shipton believed that they were not (47) the tracks of a monkey or bear and (48) that the Abominable Snowman might really (49) .
Further efforts have been made to find out about Yetis. But the only things people have
A. decision 
B. situation 
C. subject 
D. problem

He has been called the "missing link", half-man, half-beast. He is supposed to live in the highest mountain in the world—Mount Everest.
He is known as the Abominable Snowman. The (36) of the Snowman has been around for
(37) .Climbers in the 1920s reported finding marks like those of human feet high up on the side of Mount Everest. The native people said they (38) this creature and called it the "Yeti", and they said that they had (39) caught Yetis on two occasions (40) none has ever been produced as evidence (证据).
Over the years, the story of the Yetis has (41) In 1951, Eric Shipton took photographs of a set of tracks in the snow of Everest. Shipton believed that they were not (42) the tracks of a monkey or a bear and (43) that the Abominable Snowman might really (44) .
Further efforts have been made to find ont about Yetis. But the only things people have ever
A. event
B. story
C. adventure
D. description

He has been called the "missing link." Half-man, half-beast. He is supposed to live in the highest mountain in the world - Mount Everest.
He is known as the Abominable Snowman. The (41) of the Snowman has been around for (42) . Climbers in the 1920s reported finding marks like those of human feet high up on the side of Mount Everest. The native people said they (43) this creature and called it the " Yeti, " and they said that they had (44) caught Yetis on two occasions (45) none has ever been produced as evidence(证据).
Over the years, the story of the Yetis has (46) . In 1951, Eric Shipton took photographs of a set of tracks in the snow of Everest. Shipton believed that they were not (47) the tracks of a monkey or bear and (48) that the Abominable Snowman might really (49) .
Further efforts have been made to find out about Yetis. But the only things people have
A. zoo 
B. mountain 
C. museum 
D. laboratory