下列做法不正确的是（    ）

我们经常会听到人们谈论“上网”“网上购物”的话题，你知道他们据说的“网”是怎么回事吗？

通读全文，理解大意，从各题所给的选项中选择可填入短文的最佳选项。

Nowadays, millions of Chinese leave the countryside to search for work in the cities. They usually go back to1once or twice a year. Zhong Wei is one of them.

Zhong Wei has lived in Wenzhou for the last 13 years. With a hard job in a crayon factory, he is too busy to find2to visit his hometown.

Many people like Zhong Wei regard with great interest 3their hometowns have changed. Perhaps large hospitals and new roads have appeared. In many places, the government has also built 4and sent teachers from the cities to help.

ZhongWei thinks such development are very good, and these changes will take place in his hometown because some things need to change in order to become 5.

He also thinks among all the changes, some things are6to change, such as the soft and sweet memories of the hometown in people's hearts. That is why people try to find time to go back to visit their hometowns though they are very busy.

下面是“青年创新大赛”一个获奖项目。请根据本材料，用一句话概括其项目名称。(不超过10字)

随着生活水平的提高，人们越来越注重个人形象，如何找到适合的发型已经成为很多人关心的话题。都说不同脸型的人适合不同的发型，但李阳、李洁琼发现，人们其实很难分辨清自己的脸型。于是他们从网上、图书等资料中收集了100张中国人的典型头像，并将头像分为头部和脸部两部分，然后将人脸按照网络状划分，确定坐标点，根据函数分别建立模型进行运算。这样，由分析样本统计出的形状模型，就可以代表一种脸型。最后，依据传统审美观念和理发师的建议针对不同脸型进行发型设计。为此，他们还走访了30家专业理发店，完成了对100位发型师的问卷调查。

某班同学在学了有关家庭电路的知识后安装了四盏电灯，你认为其中正确的是(    )