Many Americans understand the life-saving values of the seat belt-the national use of it is at 90.1%.(2.0)

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Many Native Americans were killed during the ______ of the American West by Europeans in the 19th century.

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单选题

The TV show （）The Undersea World of Jacques Cousteau let many people see（）under the sea.

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单选题

When I try to understand（ ）that prevents so many Americans from being as happy as one might expect,it seems to me that there are two causes.

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单选题

as important as racial and gender diversity.Some observers suggest businesses try theshoe test:Look under desks.If everyones wearing the same kind of shoes-whether wingtips or slipper-the business would benefit from more diversity.Today,suggests one expert,Americans have an opportunity to make afresh map of life itself,throwing off outworn ideas about aging.Policies that encourage older Americans to expand the possibilities of theirsenior yearswill help change limited perceptions and benefit al

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材料题

干第一篇A Debate on the English LanguageA measure declaring English the national language is under intense debate in the United States.The US Senate passed two declarations last week.One calls English the nations ofticial language and the other says it is the common and unifying（统一的）tongue.But Americans found themselves divided on the issue.Since people worldwide know that most Americans speak only English,many cant understand why the issue is so controversial（有争议的）.The discussion is related to fea

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