①准备:将白菜洗净,切成两半。将腌制白菜用的水缸等器具洗干净,并用酒精擦拭消毒。
②进缸:将白菜放入缸内,均匀地摆好;加入凉开水,水要没过白菜;加入食盐,盐与白菜的重量比约为1:50。
③封缸:放上一块石头将白菜压住,用塑料袋密封缸口。
④发酵:将缸放到适当的位置,在适宜的温度下放置若干天。
⑤测量:每天取样榨汁,测量其中的亚硝酸盐含量,得到的数据如下图所示。
Do you write your own blog(博客)?Do you often1others' blogs on the Internet?All over the world, not only famous persons but also many students use blogs as diaries and places to share their experience and2advice or help. “I write my activities every day3funny things or worries in my life.” says Lali, a 16-year-old high school student at Cambridge High School in Washington." I like putting pictures on my blog because it can make my blog more4and more people will like it, It's a good way to5my life to the world." She has had her blog for eight months. Students like writing blogs6they can write anything they want to, but don't need to7any money. Once(一旦)you start to write your blog, you will8that you open up a new world. But what you write down may trouble you9. So, use the blog carefully10you can keep yourself away from some trouble. The blog makes everybody's life colorful.