题目内容
一般来讲，与积极债券组合管理相比，指数化组合管理所收取的管理费用较低。（）
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较平缓的收益率曲线说明长期债券与短期债券之间的收益差额趋于递增。（）
市场效率较弱时，可采取指数化的投资策略。（）
Passage 1 Questions 1 to 5 are based on the following passage： The reflective towers of New York City， which is on the Atlantic migrating（迁徙的）route ，can be deadly for birds. “We live in an age of glass，” said Ms.Laurel， an architect.（76）“It can be a perfect mirror in certain lights，and the larger the glass，the more dangerous it is.” About 90，000 birds are killed by flying into building in the city each year. Often，they strike the lower levels of glass towers after searching for food in nearby parks. Such crashes are the second-leading cause of death for migrating birds，after habitat（栖息地）loss，with an estimated number of death ranging up to a billion a year. （77）As glass office and apartment towers have increased in the last decade，so，too，have calls to make them less deadly to birds. San Francisco adopted bird-safety standard for new building in July. The United States Green Building Council，a nonprofit industry group that encourages the creation of environmentally conscious buildings，will introduce a bird-safety credit this as part of its environmental certification process. There are no easy fixes，however. A few researchers are exploring glass designs that use ultraviolet（紫外线的）signals，but they are still in their infancy. Covers，dot patterns，shades and net are the main options available. Often，only one section of a building needs to be changed. “You don’t necessarily have to treat every window，” Ms.Laurel said. “It would be too expensive to do the whole building.” The Jacob Convention Center， which has been undergoing alterations，the most recent building to voluntarily correct the problem of bird crashes. The architects used less reflective glass and dot patterns. What is the main idea of the passage？
债券期限越长，市场利率变动时其价格波动幅度也越小，投资者一般会对长期债券要求更高的收益率。（）
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