题目

下列关于Na2CO3的分类叙述错误的是       A、Na2CO3属于钠盐                     B、Na2CO3 俗名为纯碱，故它属于碱类C、Na2CO3属于碳酸盐                   D、Na2CO3 属于含氧酸盐  答案：B解析:略 Special TalentTom sat at his desk, looking out of the window for a long time. His class project had to be done tomorrow, which was that everyone in his class had to write about their own special talent. His friends had already _______ theirs, but Tom still had a problem with what to write about. Earlier in the week, Tom had been helping his friends with their _______. Betty came over for help and to enjoy Tom's amazing milkshakes. Tom suggested that she should write about drawing because Betty drew wonderful pictures. Betty was pretty pleased and went home _______. Tom washed the milkshake glasses. Tom sighed (叹气). He thought about the time he had with Scott at the library a couple of days ago. Scott was worried about his project. Tom _______ him to write about swimming because he was a very good swimmer. Scott hurried home to work on his project. Tom still couldn't _______ out what his special talent was. He thought about his friend.Ellie, who he walked to school with last week. Ellie tap-danced (跳踢踏舞) along beside him. Suddenly, Ellie stopped because she was upset about her project. Tom told her to write about dancing. Ellie was so happy that she leaped(跳) into the air and danced the rest of the _______ .However, Tom still couldn't decide on his special talent. Finally, he had an idea. The next day, everyone _______ their projects, and so did Tom. "It took me so long to decide that I started to think I didn't have one. ""But. . . I do have a special talent. "'I'm good at helping my friends," he said. "All of the things I do are much more fun because I do them with my friends."The whole class clapped (鼓掌). His friends clapped louder than everyone else. "You forgot something _______, Tom," said Betty. "You make the best milkshakes."Scott and Ellie nodded. "Thank you," said Tom.【1】A.finishedB.producedC.caughtD.forgotten【2】A.experimentsB.projectsC.practiceD.business【3】A.angrilyB.quietlyC.sadlyD.happily【4】A.allowedB.invitedC.advisedD.required【5】A.pointB.findC.carryD.take【6】A.termB.classC.talkD.way【7】A.recordedB.discussedC.presentedD.repeated【8】A.importantB.terribleC.seriousD.useful