题目内容
B. after
C. while
D. before
Children can spend hours a day looking at computer screens and other digital devices(数码设备). Some eye doctors say this leads to an increase in “computer vision syndrome(电脑视力综合症).”
Nathan Bonilla-Warford is an optometrist(验光师)in Tampa, Florida. He has seen an increase in problems in children. “A lot more children come into the office either because their parents have noticed that they have headaches or red or watery eyes or discomfort, or because their nearsightedness appears to be increasing and they’re worried,” he says.
Dr. Bonilla-Warford says part of the problem is that children may be more likely to pay no attention to early warning signs than adults. “Even if their eyes start to feel uncomfortable or they start to get a headache, they’re less likely to tell their parents, because they don’t want to have the game or the computer or whatever taken away,” he explains.
He says another part of the problem is that people blink(眨眼)less often when they use digital devices. He says, “A person who uses an electronic device blinks about one third as much as we normally do in everyday life. And so that can result in the front part of the eye drying and not staying protected like normal.”
Eye doctors offer suggestions like following which is known as the 20/20/20 rule. That means every twenty minutes look away twenty feet or more for at least twenty seconds from whatever device you’re using.
Other suggestions include putting more distance between you and the device and using good lighting. Of course, another way is to spend less time looking at screens. Many experts say children should spend no more than two hours a day using digital devices—with no screen time for children under two.
But not all eye doctors have noticed an increase in problems in children. Dr. David Hunter, from Children’s Hospital Boston, has not seen an increase in his practice. “While it is possible to develop fatigue looking at screens for a long period of time, there’s certainly no proof that it actually causes any damage(伤害)to the eyes.” he says.
【小题1】Which of the following is true according to the passage?
A.Dr. Bonilla-Warford thinks using computers causes nearsightedness. |
B.People keep their eyes protected against drying by blinking normally. |
C.Children under two can watch TV for less than two hours a day. |
D.Dr. David Hunter says headache causes an increase in eye problems. |
A.Interest. | B.Ability. | C.Tiredness. | D.Difficulty. |
A.Looking at Screen: Two Hours or More |
B.How Can Children Use Their Eyes Properly |
C.Using Digital Devices: Advantages and Disadvantages |
D.How Much Screen Time Is Too Much for Children |
Watching Movies for Your Summer
Garfield: A Tale of Two Kitties ——《加菲双猫记》 Hello, Garfield will meet you again on the screen. This time, America’s favourite cat Garfield travels to London. Garfield gets lost . However, he enjoys his new life in his new home. But danger is near him. |
Superman Returns ——《超人归来》 How exciting to see Superman on the screen again. Like before, he is again saving the world. But his enemy, Lex Luther, is still planning to kill him so that he can control the world. |
Pirates of the Caribbean: Dead Man’s Chest ——《加勒比海盗:聚魂馆》 Captain Jack Sparrow again appears on the screen. This time, he finds himself in a heavy debt(负债) to Davey Jones. The only way to get out of it is to find the Dead Man’s Chest. He asks his old friends for help and they start out to the sea. |
A. America B. London C. the sea D. the world
( )2. Why does Lex Luther plan to kill Superman?
A. Because he tried to save the world.
B. Because he never sees Superman on the screen.
C. Because he finds it hard to like the story.
D. Because he wants to control the world.
( )3. What is the trouble for Captain Jack Sparrow this time?
A. He again appears on the screen. B. He turns to his friends for help.
C. He is in a heavy debt to Davey Jones. D. He finds the Dead Man’s Chest.
Height is just one of the thousands of features your genes decide. In fact, because you have two parents, your genes provide you a height that usually lands somewhere between the height of each parent. If both your parents are tall, then most probably you will be tall, too, but if you have questions about how tall you’re going to be, ask your doctor if he or she can help you find it out.
But genes don’t decide everything. For example, eating an unhealthy diet can keep you from growing to your full potential(潜力). Getting plenty of sleep and enough exercise will help you grow to the expected height.
No doubt you’re wondering how fast you should grow. It depends. There’s no perfect or right answer. Generally speaking, kids grow about 2 inches (6 centimeters) a year between age 3 and the time when they start puberty (when your body starts changing and becoming more grown up).
Your doctor will know how your growth has been going over the years. Two centimeters here and 2 inches there are not nearly as important as the height you’re at now, how you’ve been growing up to this point, and what other changes your body may be going through.
Don’t be scared if you seem to have grown a lot in a very short time. Everyone has a growth spurt(高峰)during puberty. The age for starting puberty is about 10 for girls and about 11 for boys. But it can be earlier or later ----between 7 and 13 for girls and 9 and 15 for boys.
You’ll usually begin to notice that you’re growing faster about a year or so after your body starts to show the first changes of puberty.
【小题1】. The Chinese for the word “puberty” is .
A.童年时期 | B.婴幼儿时期 | C.习惯养成期 | D.生长发育期 |
A.you should have enough exercise | B.you can ask doctors for help |
C.you should save the environment | D.You can record your growth during puberty |
A.how the genes work in your body | B.when is the time you grow fast |
C.why you look like your parents | D.how you grow to a certain height |
A.how good it is to be a doctor | B.how much sleep time we need |
C.why genes can’t decide everything | D.what healthy diet is |
A.Your height most probably depends on how high your parents are. |
B.Girls’ age for starting puberty is usually earlier than that for boys’. |
C.The time showing the first changes of puberty is never noticed. |
D.You may be scared sometimes when you grow too fast. |