Do you feel like someone is watching you, even when you’re in a room alone? Well, maybe they are.

A recent article in Los Angeles Times ______ how screens（屏幕）—a computer screen, a TV screen, a cell phone screen— are ______ information about you. Most of you already know what you do on your personal computers is not ______ private. No matter how long you visit some websites, and what you do on these websites, all of that activity “tells” information about you.

If you own a smartphone, the phone ______ is recording where you are and where you go, so it can find you if you get a telephone call. Do you have a satellite (卫星) TV, where you can watch many ______? If you do, you probably have a box next to your ______ that allows you to view them. That box also allows the TV company to record which shows you watch and don’t watch.

In many American ______, you can join the store’s “club” for free and receive a ______. Each time you buy things and show the card, you’ll get discounts (折扣). This is the supermarket’s way of ______ you to visit their stores, and not other similar stores.

In a word, in this age of technology, it’s ______ to be truly private.

Tears clean your eyes. If some dirt gets in your eye, your tears will wash it out. Tears are mostly salty water, but they also have a germ(细菌) killer in them. Every time you blink(眨眼睛), germ-killing tears spread over your eyes. And since you may blink as many as thirty times in one minute, it’s no wonder that your eyes are two of the cleanest places on your body.

You don’t have to do anything to get your tears to work. These special eye keepers are always at work, protecting and cleaning your eyes. They work so well that you hardly even notice them.

But the eye keepers cannot keep your eyes healthy all by themselves. You must be an eye keeper, too. Learn the eye keeper rules. Keep your eyes healthy, and they will amaze you with wonderful sights for a long, long time.