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(每题的备选项中，有2个或2个以上符合题意，至少有1个错项。)某业主拟投资一综合大厦项目，通过公开招标的方式分别选择了甲公司和乙公司作为综合大厦的监理单位和施工单位，并分别签定了合同。为保证投资效益，业主与甲监理公司签订的监理委托合同规定：监理工作内容包括对综合大厦项目进行风险损失分析和施工监理。 在工程项目的主体施工阶段，如果出现了监理人员按规定要求施工单位予以改正的情形，则这些情形可能是施工单位的施工不符合下列选项中的( )。
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某建设工程业主与承包商签订了土方开挖工程合同，合同约定某月计划完成土方量4 000m3，计划单价80元/m3，时至月底实际完成工程量为4 500m3，实际单价为78元/m3。 若需对不同的工程项目做费用和进度的比较，进行分析适宜采用的评价指标有( )。
相比之下，大多数受过教育的人把他们的幸福跟大自然联系在一起，并且为了保护自我而努力保护大自然。
Now ______ makes the best paper in the world.
Questions 51-55 are based on the following passage. Violin prodigies, I learned, have come in distinct waves from distinct regions. Most of the great performers in the late 19th and early 20th centuries were born and brought up in Russia and Eastern Europe. I asked Isaac Stem, one of the world’s greatest violinists the reason for this phenomenon, "It is very clear," he told me. "They were all Jews and Jews at the time were severely oppressed and ill treated in that part of the world. They were not allowed into the professional fields, but they were allowed to achieve excellence on a concert stage." As a result, every Jewish parent’s dream was to have a child in the music school because it was a passport to the west. Another element in the emergence of prodigies, I found, is a society that values excellence in a certain field to nurture talent. Nowadays, the most nurturing societies seem to be in the Fast East. "In Japan, a most competitive society, with stronger discipline than ours," says Isaac Stern, "children are ready to test their limits every day in many fields, including music. When Western music came to Japan after World War II, that music not only became part of their daily lives, but it became a discipline as well. The Koreans and Chinese as we know, are just as highly motivated as the Japanese." That’s a good thing, because even prodigies must work hard. Next to hard work, biological inheritance plays an important role in the making of a prodigy. J.S. Bach, for example, was the top of several generations of musician, and fear of his sons had significant careers in music. Which of the following contributes to the emergence of musical prodigies according to the passage
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