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每日一题
066. Committee membership rotates every year, so that new voices and opinions ar......
2026-05-03
065. One award subsidizes a promising American writer's visit to Rome. There......
2026-05-02
064. Aside from perpetuating itself, the sole purpose of the American Academy an......
2026-05-01
063. Making an efficient icebox was not as easy as we might now suppose. In the ......
2026-04-30
062. The ice trade grew with the growth of cities. Ice was used in hotels, taver......
2026-04-29
061. If observations confirm the scientists' predictions, the theory is supp......
2026-04-28
060. In science, a theory is a reasonable explanation of observed events that ar......
2026-04-27
059. Rapid industrialization and increased geographic mobility in the nineteenth......
2026-04-26
058. Although the birth rate continued to decline from its high level of the eig......
2026-04-25
057. People in the United States in the nineteenth century were haunted by the &......
2026-04-24
056. Meteorologists and computer scientists now work together to design computer......
2026-04-23
055. Communications satellites can transmit data around the world cheaply and &n......
2026-04-22
054. Conventional computer models of the atmosphere have limited value in predic......
2026-04-21
053. Secular institutions, of control such as the police and army take the place......
2026-04-20
052. Unaltered folk cultures no longer exist in industrialized countries such as......
2026-04-19
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