题目内容
At 2 P.M. on Dec. 5,1945, five Navy bombers took off in perfect flying weather from the Naval Air Station at Fort Lauderdale, Fla., on a 【C1】______ training mission over the Atlantic Ocean. Less than two hours later, the flight commander 【C2】______ that he was "completely lost." Then there was silence. A 【C3】______ plane was sent to search for the missing aircraft and it, too, disappeared. In all, six planes and 27 men 【C4】______ that day without a trace. Despite one of history's most 【C5】______ search efforts, Involving more than 300 planes and dozens of ships, the Navy was unable to 【C6】______ even floating wreckage or a telltale oil slick.
This is just one of the many chilling stories told of "The Bermuda Triangle". During the past 30 years, the triangle has 【C7】______ the lives of some 1000 seamen and pilots. 【C8】______ sailors, it is known variously as "The Triangle of Death," "The Hoodoo Sea" and "The Graveyard of the Atlantic" because of the mysterious calms, waterspouts, and sudden storms that have 【C9】______ seafarers in its water.
The triangle has 【C10】______ considerable public interest through three 【C11】______ books, a television documentary (narrated by horror master Vincent Price) and a special exposition at the Library of Congress. None of these investigations has produced 【C12】______ answers to the mystery of the triangle, but there is no 【C13】______ of interesting theories. Some scientists and popular authors go 【C14】______ suggest that triangle is the 【C15】______ ground of extraterrestrial beings in search of human specimens for their "cosmic zoos."
【C1】
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开发周期较长的房地户，供给弹性相应较小。()
Which of the following is NOT true？
听力原文： Many kinds of animals are endangered by human beings. The United States government list of endangered species includes tigers, grizzly bears, some kinds of whales, and over three dozen species of butterflies. What has led to the scarcity of these animals, which may become extinct without vital protection？
One important factor is that many animals have been widely hunted and killed for food, or for their beautiful skins. Besides, some predators are threatened by ranchers to protect their sheep and chicken, such as eagles or wolves. Moreover, some species, like polar bears, are endangered because humans are successfully competing with them for the use of environmental space.
With various animals being killed for food, for decoration, and for the protection of domesticated animals, or dying because of unfortunate contact with human environments, it is not surprising that some are becoming scarce, that the number of species on the endangered list is growing every year. Furthermore, it is important to understand that individual species are not the only factors involved in fids dilemma. Endangerment is a broad issue, one that involves the habitats and environments where species live and interact with one another. Man is discovering that his world includes the other animals in it, and one can only hope this discovery is not coming too slowly or too late.
What is the passage mainly about？
可修复的损耗是经过修理后可恢复其原有功能的损耗，反之，为不可修复的损耗。()
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