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某建设项目有四个方案，其评价指标值如下表，根据价值工程原理，最好的方案是()。
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A．By ten months.B．When one year old.C．When two years old.D．At birth.
Ironically, in the United States, a country of immigrants, prejudice and discrimination continue to be serious problems. There was often tension between each established group of immigrants and each succeeding group. As each group became more financially successful, and more powerful, they excluded newcomers from full participation in the society. Prejudice and discrimination are part of our history, however, this prejudicial treatment of different groups is nowhere more unjust than with black Americans.
Blacks had distinct disadvantages. For the most part, they came to the "land of opportunity" as slaves and they were not free to keep their heritage and cultural traditions. Unlike most European immigrants, blacks did not have the protection of a support group; sometimes slave-owners separated members of the same family. They could not mix easily with the established society either because of their skin color. It was difficult for them to adapt to the American culture. Even after they became free people, they still experienced discrimination in employment, housing, education, and even in public facilities, such as restroom.
Prejudice and discrimination ______.
A．That she has stopped smoking.B．That she does not want to get married.C．That she has
A．That the man rethink their plans.B．That the man see a family doctor.C．That the man s
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