※ 引述《nemo31 (shidefan)》之铭言： : 17. (27669-!-item-!-188;#058&003302) : Urban air contains more sulfur dioxide than does rural air, and plants : in cities typically grow more slowly than do plants in rural areas. : In an experiment to see how much of the difference in growth is due to : sulfur dioxide, classes in an urban and a rural school grew plants in : greenhouses at their schools and filtered the greenhouse air to eliminate : sulfur dioxide. Plants in the urban greenhouse grew more slowly than : those in the rural greenhouse. : Which of the following, if true, would it be most important to take into : account in evaluating the result? 题目问的是evaluating the result 等於是说，答案要的是针对该实验发现的状况提出解释 如果没有说明可能的差异原因，那就不是答案 : (A) The urban school was located in a part of the city in which levels of : sulfur dioxide in the air were usually far lower than is typical for : urban areas. 依答案内容没办法说明rural的greenhouse中植物长的比较快的原因 : (B) At both schools, the plants in the greenhouses grew much more quickly : than did plants planted outdoors in plots near the greenhouses. 范围不对->题目没提到outdoors的部分 : (C) The urban class conducting the experiment was larger than the rural : class conducting the experiment. 粗看有可能是答案，有说明可能的差异原因 但是如果此选项为真 那无法说明是sulfur dioxide造成，还是因为空间较大造成 (如果题目是问weaken实验结果，则此答案最佳) : (D) Heavy vehicular traffic such as is found in cities constantly deposits : grime on greenhouse windows, reducing the amount of light that reaches the : plants inside. 可能是答案，因为有说明两边差异的可能原因 : (E) Because of the higher levels of sulfur dioxide in the air at the urban : school, the air filters for the urban school's greenhouse were changed more : frequently than were those at the rural school. 空气滤清器换的比较快只代表都市空气比较脏 原题第五行有说在greenhouse内的空气都是已经去掉sulfur dioxide了 所以此选项为真也无法解释差异原因 : 答案是D : 本来以为是AE其中之一 : 希望有人能帮忙解答,谢谢 就结果来看，因为只剩D是可能选项所以选D --

※ 发信站: 批踢踢实业坊(ptt.cc) ◆ From: 123.193.198.157