今天的阅读理解中，有两位朋友不太舒服，看一下Dr. Cory怎样为他们解答吧！
(A)
|
Dear Dr. Cory,
Is it true you can get blind by looking at the sun?
Samantha |
Dear Samantha,
We asked professor Jimmy Brown from Oxford to answer your question. Here's what he said.
“The answer to Samantha's question is YES! You can become blind from looking at the sun, because doing so focuses its rays on the retina, sensitive cells at the back of the eyeball, part of which is the fovea. Fovea damage can cause blindness at the center of a person's eyesight.”
“This is because the sun burns a hole in the fovea just like it will burn a leaf or paper when focuses through a magnifying glass.
“A special case of sun damage can happen during a solar eclipse, when you look easily at the sun. But be careful, there is still enough light to hurt the eye. NEVER look at the sun, even during an eclipse!”
注：blind /blaind/ adj. 瞎的
focus / `f
uks/ v. 使某物集中于一点
retina /`retin/ n. （眼睛的）网膜
fovea / `fuvi/ n.（骨骼等的）凹陷
magnifying glass 放大镜
solar eclipse 日蚀
阅读短文然后选择正确答案。
1. Can we get blind by looking at the sun?
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2. What can cause blindness?
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3. Can sun eclipse damage your eyes?
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(B)
|
Dear Dr. Cory,
I am twelve years old and am very thin. I have a good appetite, but I never gain any weight. I was wondering, why is that?
Jenny Brown |
Dear Jenny,
It's important to think about how tall you are and how active you are.
Your weight may be just right for your height. Or, if you are a very active person, you may be burning your food calories as fast as you eat them. Your body metabolism, might just be faster than your friends'. You might be burning the calories faster.
When you begin to grow fast, you may need to eat even more to grow as you should. Or in your teenage years, hormonal changes may mean you'll need to eat less. Or more. It just depends on your body.
注： height /hait/ n. 身高
calorie /`k
lri/ n.卡路里（热量单位）
metabolism /m`tblizm/ n. 新陈代谢
hormonal /`h
munl/ adj. 荷尔蒙的
根据短文内容回答下列问题。
1. When we think about our weight, what else should we think about?
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2. What happens if we begin to grow fast?
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3. Why does a person look thinner than his friends?
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[Keys：(A)1. Yes. 2. Fovea damage can cause blindness. 3. Yes, it can. (B) 1. We should think about height. 2. We need to eat more to grow as we should. 3. Because either he's an active person or his body metabolism is faster than his friends'.]
