1. (2017八下·高阳期中) 阅读下面短文，掌握其大意，然后从各小题所给的四个选项中选出最佳选项。   

    Facebook is a famous website. It is 1 among young students, especially (尤其是) college students. They can 2 find friends or send photos on the website. They can have lots of fun when they visit Facebook. In all, Facebook is 3 more famous and it has more users.

    According to a US newspaper, Facebook may soon 4children under 13 to visit the site. They can visit the website 5 they are staying with their parents.

    At the moment, children under 13 are not allowed to visit Facebook. There are some 6. One of them is about strangers.  Sometimes strangers may be bad people. If bad people know the children's names, addresses and much personal 7, the children may be 8danger.

    But more and more children want to visit Facebook. The company wants to find some ways to keep children 9 when they visit Facebook.  For example, their accounts can be linked with (与……相联系) their parents. Parents can 10 their children's friends easily. They may even check their children's chat messages.