作者：英吉
Many residents of Calovia are committed to using products containing recycled materials. Soon these consumers will get help in identifying such products from a book being published by the Calovian government. The book offers a comprehensive listing, by product type and brand, of goods sold in Calovia that contain recycled material. Therefore, publication of the book will almost certainly increase the use of products containing recycled materials in Calovia.
Which of the following, if true, most strengthens the argument?
A. Proceeds from the sale of the book are not expected to exceed the cost of its publication.
B. For numerous types of products, there are many brands that use recycled materials, although their manufacturers and distributors do nothing to advertise those brands’ recycled content.
C. For many materials, such as plastics, the recycling process results in a lower grade of material with a correspondingly different range of uses.
D. For many types of products listed in the book, all the brands available in Calovia use recycled materials.
E. Many manufacturers of products that contain recycled materials vary the proportion of recycled materials in those products in response to changes in price and availability.
题目分析：A说卖这个书是否超过出版的成本，没说，杀。B说虽然生产商和分发商没有对产品用环保型材料做广告，但是很多品牌确实用的是环保材料，信息和原文有交叉，留着。C说用环保材料将会导致原材料级别变低，没说，杀。D说所有品牌使用环保材料，留着。E说生产商改变产品环保材料所包含的比例，没说，剩下两个，我们看看问题，问支持原文的，B的感觉是即使我不作广告，你也会使用环保材料（象拍马屁的）D怎么看怎么象一个事实叙述，不象支持的（只是叙述了一个现象！）
