题目

 We published the book intended to________ mainly to teachers and students of Senior Grade 2 in the coming new term. A．appeal                      B．attach                 C．link                  D．refer 答案：A（2007?镇江）下列物质发生的变化与空气的成分无关的是（ ）A．钢铁在空气中生锈B．生石灰在空气中变质C．烧碱固体在空气中潮解、变质D．碳酸氢铵露置在空气中质量减少