题目

任务型阅读  阅读下面短文，根据所读内容在文章后表格中的空格里填入一最恰当的单词，每个空格只填1个单词。 A good book can teach you things beyond(超出) your class. It can open your eyes and clear your minds. If you want to get into a good reading habit, there are a number of ways to develop it. Plan your time You should give yourself at least thirty minutes in all for reading every day. When time is set, nothing can change it. For example, make it a habit to read during breakfast or lunch time. Always carry a book Wherever you go, take a 铅笔是常用的学习用品，铅笔芯的主要成分是石墨和黏土。某型号的铅笔芯质量的一半成分是石墨，用该铅笔写一个化学方程式消耗铅笔芯的质量约1mg，那么铅笔芯中减少的碳原子数约为                                （     ）        A．2．5×1019个       B．2．5×1022个        C．5×1019个              D．5×1022个