下列各组词语中，没有错别字的一组是（ 　　）

    Do you w____your own blog(博客)？Do you often r____others' blogs on the Internet?

All ____ the world, not only famous people but also many students use b____ to share their e____ and ask for advice or help. "It's a good way to ____ my life to the world, "a student says. She has had her blog f____ eight months. Students like ____(write) blogs. O____you start to write your blog, you will find that you o____up a new world. But what you write down may trouble you sometimes. So, use the blog carefully so that you can keep yourself away from some trouble. The blog makes everybody's life colorful.

综合性学习
近年来，“候鸟儿童”现象成为全社会关注的话题之一。学校就此开展社会实践活动，请你完成下列任务。

人们发现组成为铝﹣铜﹣铁﹣铬的准晶体具有低摩擦系数、高硬度、低表面能以及低传热性，正被开发为炒菜锅的镀层，这为准晶体的开发和利用提供了先例．下列关于准晶体的说法不正确的是（　　）