Nowadays, many children spend hours a day looking at computer screens or other digital products. Some eye doctors say all the screen time has caused more children to have what they call computer vision syndrome(视力综合症).

Nathan Warford is an optometrist (配镜师) in the US. He says he has seen more children having eye problems.

“More children come into my office because their parents have noticed that they have headaches or red eyes, or because their degree of short-sightedness appears to be increasing very fast and they’re worried,” he said.

Dr. Warford says part of the problem is that even if their eyes start to feel uncomfortable or they start to get a headache, some children don’t tell their parents, because they don’t want their games or the computer to be taken away.

Another part of the problem is that people blink(眨眼睛) less often when they look at the screen.A person who uses a computer or a digital product blinks about one third as much as we normally do in everyday life. If eyes can’t stay wet or are too tired, they will not be protected like normal.

1.Which of the following isn’t caused by too much screen time?

A. Having headaches. B. Having wet eyes. C. Having red eyes.

2.Some children don’t tell their parents when their eyes start to feel uncomfortable because .

A. they think it is not serious

B. they want to go to hospital themselves

C. they want to continue playing computer games

3.People blink as they normally do when they use computers.

A. one third as much B. two thirds as much

C. half as much

4.From the passage, we can learn that .

A. tears can’t protect eyes

B. less screen time is good for eyes

C. children should blink as much as possible

5.What is the passage mainly about?

A. People who often get headaches.

B. Some information about the latest digital products.

C. Eye problems in children caused by using digital products.

There are many ways you can save money at the supermarket . Here are some of the best:

▲ Make a list and follow it.

The list is about your needs: the notebooks you’re out of and the food you need for daily meals. When you buy the things that are not on the list, you are wasting your money.

▲Compare the prices.

The biggest package isn’t always the cheapest. Sometimes it is cheaper to buy in bulk*. So it’s useful for you to compare the prices.

Ditch the basket or cart.

If you’re going to the supermarket just to pick up milk and bread, don’t use a basket. Baskets let people to buy more. Only use a basket or a shopping cart if it’s really necessary.

▲Make one large trip instead of several small ones.

Each time you enter the supermarket, you get another chance to spend. By reducing the times of your trips, you’re saving both time and money.

▲Shop when you are full.

If you go to the supermarket for milk on a Sunday morning without eating breakfast, you are likely to come home with bread, sandwiches and orange juice.

1.How many ways are mentioned to save money at the supermarket ?

A. four B. five C. six D. seven

2.The underlined word “ditch” in the third tip means “______ ” in Chinese .

A. 使用 B. 出售 C. 丢弃,不使用 D. 冲洗

3.Which of the following is NOT true according to the passage?

A. You should make a list before going to the supermarket.

B. Sometimes the bulk items are cheaper than the biggest package.

C. Reducing your shopping times can help you save both time and money

D. You should shop when you are hungry.

4.What is the passage mainly about ?

A. Shopping tips about saving money at the supermarket.

B. Compare the prices when you are shopping.

C. Make a list before you shop.

D. Shop when you are full.

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