William Blake described the eyes as the “windows of the soul.” Our eyes are the windows through which we see the world around us. Either way,there’s no question that we place great value on our eyes and our eyesight. Surveys have shown that of the five senses,sight is the one that people fear losing the most.

Thinking about the important function of our eyes,we’d give them the best care possible, but sometimes we get too busy or forget to do a few simple things that can keep our eyes healthy.

Protecting your eyes starts with the food on your plate. Remember when you were a kid and your mom told you that carrots would improve your eyesight. Well, she might be right. Proper food will keep your eyes strong and healthy.

Give up your daily habits that could seriously injure your eyes. Always wear sunglasses in a sunny day to protect your eyes from Ultraviolet ray(紫外线). Rest your eyes every 20 minutes from the computer screen by looking 20 feet away for 20 seconds. At least every 2 hours, get up and take a 15-minute break when working at a computer.

Make sure your eyes do not get injured in the first place. You should try to prevent eye injuries whether you’re playing sports or doing housework. You should also know when to wear safety glasses and what kinds will work best for you.

Last but not least, get your eyes examined regularly. Eye exams can help find some eye diseases. It’s important to find these diseases early on, when they’re easier to treat.

1.According to a survey, people fear losing ________ most.

A.their smells B.their hearings C.their sights D.their tastes

2.The underlined word function might mean “ ________ ” in Chinese.

A.差异 B.问题 C.优势 D.功能

3.Finding eye diseases early on through eye exams ________.

A.saves much work for the doctors B.is helpful for the treatment

C.provides you the best care of your eyes D.wastes much of your money

4.What is the best title of the passage?

A.Give Your Eyes Some Rest B.Protect the Windows of the Soul

C.Good Habits Bring Health D.Simple Way of Eye Exams wastes much of your money

Even the closest star to us, Proxima Centauri, is very far away.

Scientists would love to get a closer look at this star and its planets. But the fastest spaceship ever built would take nearly 75,000 years to get there. That's just too long!

Scientists have come up with a plan-send a group of very tiny spaceships. Why tiny? The smaller something is, the easier it is to make it go fast. They're hoping a group of stamp-sized ships(Star Chips)could travel fast enough to reach Proxima Centauri in just 20 years. There they could take pictures and collect information. If there is any life there, the Star Chips might be able to find it-and say hello from Earth.

Each Star Chip will carry a tiny camera, thrusters, and sensors. It will ride a sail about the size of a picnic table. The plan is to send many, in case some don't make it.

Scientists hope that their tiny Star Chips will be able to reach a speed of 134 million miles(216 million km)an hour. First, the rocket will take the Star Chips to space. Once in space, they will open their shining sails. Then, people on Earth will shoot out lasers at the sails. All those lasers shot at the sails will push the Star Chips so fast that they will reach the moon in just two minutes.

The computer chip at the heart of each Star Chip is tiny like the ones in mobile phones. None of the other technologies has been built yet. The hardest part will be the lasers, which have to be extremely powerful. The team will also need to invent a light, strong, and very shiny material for the sails, and tiny cameras powerful enough to take pictures of planets. And they'll have to find a way to send those pictures back to Earth. There's a lot of work ahead. But if they succeed, the heart of a mobile phone may be the very first interstellar traveler.

1.Scientists plan to invent the Star Chip mainly because it .

A.could send messages to other planets B.could take photos and collect information

C.could find life in other stars and planets D.could be small enough to travel much faster

2.Powerful lasers will be shot at Star Chips to .

A.make sure Star Chips won't be hit in space B.send Star Chips to space from Earth safely

C.open the strong and shining sails of Star Chips D.give Star Chips enough energy to travel in space

3.What technologies about Star Chips are still waiting to be built?

①The way to send pictures back to Earth.

②The strong and shiny material for the sails.

③The tiny cameras able to take photos of planets.

④The chip as small as the ones in mobile phones.

A.①②③ B.②③④

C.①②④ D.①③④

4.What is the best title of the passage?

A.A Chip with Great Power B.A New Coming Spaceship

C.A Big Problem about Star Chips D.A Great Trip to Proxima Centauri

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