1911 年 10 月 15 日，法国报刊登载了一篇关于中国的新闻报道《中国的革命，崛起的国家》，其中有“剃头店铺、起义者和武昌风光”等图片。报道中的“中国革命”指的是(   )       

某化学兴趣小组按照下列方案进行“由含铁废铝制备硫酸铝晶体”的实验：

步骤1：取一定量含铁废铝，加足量的NaOH溶液，反应完全后过滤．

步骤2：边搅拌边向溶液中滴加稀硫酸至溶液pH=8～9，静置、过滤、洗涤．

步骤3：将步骤2中得到的固体溶于足量的稀硫酸．

步骤4：将得到的溶液蒸发浓缩、冷却、结晶、过滤、干燥．

请回答以下问题：

（1）上述实验中的过滤操作需要玻璃棒、____ 、____ 等玻璃仪器．

（2）步骤1过滤的目的是____ ．

（3）步骤1反应的化学方程式为____ 　．

（4）步骤2中溶液的pH较难控制，可改用____ ．

    A proverb says, “Time is money”. But in my opinion, time is even ____precious than money. Why? Because when money____(be) spent, we can earn ____back. However, when time____(go), it will never return.

    It is known to all that the time we can use is ____(limit). Therefore, we should make use____our time more ____(full) to study hard so as to serve our country in____future. But it is a pity that there are a lot of persons____do not realize the value of time. They spend their precious time smoking, drinking and playing.

    In a word, we should form a good habit of ____(save) time. Do not put off what can be done today till tomorrow.