第24题: [单项选择]Questions 22-25 are based on the following passage.What is the "lead" in a pencil made of.’ A. Diamond. B. Carbon. C. Lead. D. Graphite. 参考答案:D 答案解析:本题的关键词为graphite,is used to make the“lead”in your pencil.根据关键句可推断出。可能有学生会选[B],因为graphite consists of