下列物理量中属于标量的是（   ）

    Computer technology has become an important part of people's life. This technology has its own special words. One well-known computer word is Google. It's the name of a popular "search engineer(引擎)" for the Internet. People use the search engineer to find information about almost any subject on the Internet. The people who started the company named it Google because in math Google is a very large number----One hundred zeros follow the number one. When you " Google" a subject, you can get a lot of information about it.
    If you Google someone, you might find that person’s name on a blog(博客). A blog is short for a Web log. It’s a personal Web page. Some people write blogs to express their opinions and ideas over the Internet. Some use them to share their lives with faraway friends or family. Others write blogs to help them deal with sickness, money problems or to choose movies to see or books to read. Some people add information to their blogs every day. People who have blogs are called bloggers.
根据短文内容，判断下列句子是否正确

西门豹问了老大爷哪几个问题，老大爷是怎样回答的？填写下面表格。

如表中的样本为某健康人入球小动脉中的血浆、肾小囊中的原尿和肾小管末端的尿液，表中的数据为各样本中主要成分的含量（单位：克/100毫升），请通过比较表中的数据回答下列问题．