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千围维读书治学的一个重要方法,就是对一个问题,总是先______地收集资料,然后______地予以分析,最后进行综合性的总结,从而达到对这一问题深刻的认识。

A. 谨慎 抽丝剥茧
B. 全面 独出心裁
C. 广泛 条分缕析
D. 仔细 分门别类

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对文艺精品的判断,时间验证之空间效应更为重要。遗憾的是,当下某些人的创作______是:急功近利,注重眼前的实惠,难耐寂寞,对空间效应的追求远远大于对时间验证的关注,因而作品中从生活到艺术都______“将来时态”和“未来意识”。

A. 现象 需要
B. 事实 欠缺
C. 趋势 寻求
D. 倾向 缺乏

Changes in regional climate brought about by large-scale deforestation in the eastern lowlands of Central America are affecting weather downwind in the mountains, imperiling ecosystems there.The so-called cloud forests of Monteverde lie along the crest of Costa Rica’s Cordillera de Tilaran mountains. These habitats rely on the almost perpetual fog that forms as moisture-laden Caribbean winds rise up the eastern slopes of the mountains and pass through altitudes at which clouds condense, says Robert O. Lawton, an ecologist at the University of Alabama in Huntsville. The humidity in those breezes is enhanced by moisture expelled from the leaves of lowland forests.By the early 1990s, more than a century of deforestation had left only 18% of the Costa Rican lowland forests east of the peaks untouched. The pastures that replaced forests don’t humidify the winds as well as forests do and are better at warming the atmosphere. As a result, the winds off these pastures must rise further up the Cordillera de Tilaran slopes before clouds condense.Satellite photos of the lowlands in the dry season show that clouds are absent or sparse over deforested areas but are thicker over the forests of neighboring Nicaragua. Computer simulations of day-time cloud formation in the area support these observations, Lawton notes, and they also suggest that the altitude of the cloud base would rise about 200m above today’s height if the lowlands were completely deforested. Lawton and his colleagues report their result in Science magazine.The gradual shifting of bird ranges upslope and a recent population crash among frogs and toads in the Monteverde cloud forest suggest that the veil of clouds may be lifting. Scientists had already blamed the rise of the cloud base for the longer periods of mistfree conditions observed at the downwind edge of the forest. Lawton warns that in the future, the clouds may disappear from the Monteverde slopes for days at a time during the dry season -- a development that could lead to collapse of the ecosystems there. Which of the following words can replace the word "as" in the second paragraph()

A. which
B. that
C. when
D. while

该企业2000年12月3日收到上月采购的甲材料并将其入库后应编制的会计分录是( )。

A. 借:物资采购 50000 贷:应付账款 50000
B. 借:原材料 48000 贷:物资采购 48000
C. 借:原材料 48000 应交税金—一应交增值税(进项税额) 8500 贷:物资采购 50000 材料成本差异 6500
D. 借:材料成本差异 2000 贷:物资采购2000

关于肽键的描述,下列哪个是不正确的

A. 肽键具有部分双键性质
B. 肽键属一级结构范畴
C. 肽键可以自由旋转
D. 肽键中C—N键所连的四个原子处于同一平面

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