铁易生锈,试设计一个实验,证明铁的生锈,既不单纯是水的作用,也不单纯是氧气(空气 发布时间:2017-06-10 18:56 │ 来源:www.tikuol.com 题型:问答题 问题: 铁易生锈,试设计一个实验,证明铁的生锈,既不单纯是水的作用,也不单纯是氧气(空气中)的作用,而是水和氧气共同作用的结果. 步骤现象结论① ② ③ …
题型:问答题 —It is reported that the government has lightened the burden on the students.—Oh,today we are still _____ from heavy schoolwork,_____ at preparing us for the entrance examination.[ ]A. suffering;aiming B. suffered;aimedC. suffering;aimed D. suffered;aiming 查看答案