If your child has mobile internet access, it will be more difficult to monitor(监督) and control his or her internet use. Kids are turning to the internet for everything from hanging out with friends to shopping, which makes it harder for parents to keep track of their online activities. Fortunately, there are many choices for controlling what your kids see on their computers, laptops, and mobile devices.
Content blockers and filters are great tools to use for younger kids. They allow you more control over where they go and what they do online. A content blocker can block some unhealthy websites or limit a child’s search to the kind of sites. A content filter can scan sites and pictures and block those sites that contain certain words, key phrases, or content.
Consider tracking software for older teenagers. This software enables you to see which sites your children have visited, tracking their path online. This tool gives young people more freedom to explore the Internet, but it also allows you to check that they are using the internet responsibly. Let your teenagers know that you trust them, but that you will be regularly checking that they are visiting appropriate sites online.
Even if you use content blockers, filters, and trackers, you know that a lot of kids figure out ways to get around these, so it’s important to remain alert(警惕的). Remember that not all adult sites can be identified by blocker, filter, or tracker software. That’s why it’s important to talk to your kids about what to do when something inappropriate or scary comes up. Nothing can replace involvement and supervision(监督) by adults. Keep monitoring how your kids use the internet on a regular basis without getting into the role of internet traffic police.
What is the passage mainly about?

A．More and more kids have mobile internet access

B．Some choices for monitoring and controlling kid’s internet use

C．It is difficult to monitor and control kid’s internet use

D．Kids are turning to the internet for everything

How should parents monitor and control younger kids’ internet use?

A．With tracking software

B．With tracking software and content blockers and filters

C．With content blockers and filters

D．With filters and trackers

The 3th paragraph is about         .

A．how to monitor and control older teenagers’ internet use

B．how to monitor and control younger kids’ internet use

C．tracking software

D．Content blockers and filters

Parents should remain alert when they monitor kids’ internet use because      .

A．content blockers, filters, and trackers are useless.

B．lots of kids figure out ways to get around content blockers, filters, and trackers.

C．not all adult sites can be identified by blocker, filter, or tracker software

D．nothing can replace involvement and supervision by adults

         is the most important for parents to monitor and control kid’s internet use?

A．Tracking software	B．Content blockers and filters
C．Filters and trackers	D．Involvement and supervision by adults