每支铅笔的价钱是b元,小明有X元钱,买了4支铅笔,还剩下多少元?请用含有字母的式 发布时间:2017-05-02 14:52 │ 来源:www.tikuol.com 题型:填空题 问题: 每支铅笔的价钱是b元,小明有X元钱,买了4支铅笔,还剩下多少元?请用含有字母的式子表示还剩______元.
题型:填空题 Only __________according to the directions can the medicine be quite effective. [ ]A. taking B. taken C. being tak'en D. having been taken 查看答案