[单项选择]The giant pandas’ prospects are better now than in the recent past. New insights into behavior, diet and physiology offer hope that we may be able to protect and breed these animals more effectively.
Pandas are exceedingly elusive. Pandas are natural vagrants, unsociable and eccentric. There has been considerable debate over the evolution of pandas. Some experts have thought that they descended from raccoons. Others believe they share a common ancestor with the bear, but evolved independently.
The animals could once be found in much of southern and eastern China, as well as parts of Southeast Asia. And though the panda’s range has steadily shrunk, its habits are unaltered. The panda’s routine is indeed a bum’s life, spent wandering from one bad meal to another and bedding down in the nearest dark corner. Although pandas can swim and climb trees, they spend most of their time seeking out and chewing bamboo.
Pandas have been known to eat chicken and honey when bamboo is in
A. effective measures have been taken
B. many things about pandas have been made known
C. their living conditions have been greatly improved
D. the bamboo favored by pandas has been discovered

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[单项选择]The giant pandas’ prospects are better now than in the recent past. New insights into behavior, diet and physiology offer hope that we may be able to protect and breed these animals more effectively.
Pandas are exceedingly elusive. Pandas are natural vagrants, unsociable and eccentric. There has been considerable debate over the evolution of pandas. Some experts have thought that they descended from raccoons. Others believe they share a common ancestor with the bear, but evolved independently.
The animals could once be found in much of southern and eastern China, as well as parts of Southeast Asia. And though the panda’s range has steadily shrunk, its habits are unaltered. The panda’s routine is indeed a bum’s life, spent wandering from one bad meal to another and bedding down in the nearest dark corner. Although pandas can swim and climb trees, they spend most of their time seeking out and chewing bamboo.
Pandas have been known to eat chicken and honey when bamboo is in
A. a bear
B. a puma
C. a cat-like animal
D. an unknown mammal

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[填空题]

Sleeping Giant

Right now, an eruption is brewing in Yellowstone National Park. Sometime during the next two hours, the park’s most famous geyser, Old Faithful, will begin gurgling boiling water and steam. (46)
Old Faithful is not only a spectacular sight; it’s also a constant reminder that Yellowstone sits on one of the largest volcanoes in the world. If you’ve never heard of Yellowstone’s volcano, you’re not alone. (47) . Yet it has erupted three times during the last 2 million years. And one of those eruptions spewed enough volcanic ash and other debris to blanket half the United States.
Yellowstone’s volcano is sometimes called a "supervolcano," or extremely large and explosive caldera volcano. (48) . This supervolcano formed over a hot spot, an extremely hot area in Earth’s mantle. John Valley, volcano professor, said that as the crust moves across a hot spot, the hot spot melts a section of the plat

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[填空题]

Sleeping Giant

Right now, an eruption is brewing (酝酿) in Yellowstone National Park (黄石国家公园). Sometime during the next two hours, the park’s most famous geyser(间歇泉), Old Faithful, will begin gurgling (潺潺地流) boiling water and steam. (46)
Old Faithful is not only a spectacular sight; it’s also a constant reminder that Yellowstone sits on one of the largest volcanoes in the world. If you have never heard of Yellowstone’s volcano, you are not alone. (47) Yet it has erupted three times during the last 2 million pears. And one of those eruptions spewed (喷涌) enough volcanic ash and other debris to blanket half the United States.
Yellowstone’s volcano is sometimes called a "super volcano", or extremely large and explosive calderas(破火山口)volcano. (48) This super volcano formed over a hot spot, an extremely hot area in Earth’s mantle(地幔). John Valley, a volcano professor, said that as the crust moves ac

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