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非公有制经济的发展，国有经济比重的减少，会影响我国社会的社会主义性质。（）
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(共3大题，10小题，每小题的备选答案中只有一个最符合题意)1999年在某城市中心城区购买了一幢6层的百货大厦，为保证正常经营，于2004年初进行了重新装修。2006年初，王某委托房地产估价机构评估该大厦的市场价值，评估结果为800万元。一年后王某因病去世，临终前留下遗嘱：总价值800万元的大厦由其一儿一女平均继承。为此，该大厦处分前兄妹俩达成书面协议：妹妹获得该大厦的一、二层，哥哥获得三～六层。 兄妹俩处置该房地产需要办理的房屋所有权登记手续为（）。
把分组标志分别放在统计表的横行位置和纵栏位置编制成的统计分组表，叫做双向复合分组表。( )
—This cake’s delicious! Did you make it yourself —____ My sister got it from the bakery.
Text 4 A pure virus (病毒) could be kept in a bottle, just like hundreds of other chemicals. Yet, when a virus is placed on a living thing, it comes to life. As long as it is on a living material, it grows. A difficult question still remains - what is a virus Is it living or chemical Men of science had always thought life and not-life to be as different as black and white. With the discovery of the virus, they became aware of a grey area that was neither black nor white. Until the 1930’s, it was accepted that there was also a great difference in size between the largest chemical molecules (分子) and the smallest living things. As new and much finer filters (过滤器) were invented, men were able to measure viruses. The first virus to be measured was found to be about 100 millimicrons (毫微米) across. The largest known chemical molecule measures only 22 millimicrons. The smallest living thing measures almost seven times that size or 150 millimicrons. When viruses were measured, they were found to range in size from 16 millimicrons to 300 millimicrons. Most were found to be larger than the largest chemical molecules and smaller than the smallest living things. The answer to the puzzle - what is a virus - must be that it is both living and not living. In a living cell, it is a live thing. In a bottle, it is nothing more than a chemical. We now realize that the virus is actually a link between life and not-life. What is this text mainly about（）
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