题目

阅读下列材料，从所给的 A、B、C、D 四个选项中，选出符合材料意思的最佳选项。 My friends like to ask for help or get help on Wechat. Now they put some information(信息) on it.           1.The baseball is       . I.    in the library    B. in the classroom C. in the computer room D. in Class 234 2.Who lost their things? J.    Bob, Alan and Jack                    B. Jack, Alan and Jason C. Jason, Jack and Bob                  D. Jason ,Bob, and Alan 3.If you find a schoolbag, you can call  . A. 354有下列九种物质：①纯碱；②生石灰；③甲烷；④烧碱；⑤酒精；⑥镁；⑦干冰；⑧金刚石；⑨葡萄糖等物质．对上述物质进行的下列分类不正确的是（　　）A、单质：⑥⑧B、有机物：③⑤⑨C、氧化物：②⑦D、碱：①④