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A
KEY→P6
范畴:人与自我
主题:自我认识
体裁:说明文
难度:★★★★
建议用时:8分钟
评价:/4
热考素材 跨学科·生物 Your eyes need light to see. The things you see either make their own light (like a candle or a phone screen), or reflect light from somewhere else into your eyes. Most objects reflect light.
First, light enters the eye through the front parts like the cornea(角膜) and lens(晶状体). These parts work together to focus the light onto the back wall of the eye, the retina(视网膜), which has special cells(细胞) that sense light. The pupil(瞳孔) controls how much light comes in. This allows you to see clearly and protects your eyes. The lens adjusts itself to focus on objects that are near or far—this is called accommodation(调节).
While the lens focuses light, it also turns the image upside down. This means light from the top of an object hits the bottom of the retina, and light from the bottom hits the top. The retina’s light-sensitive cells then send this upside-down picture to your brain through the optic nerve(视神经). Does your brain have to flip(翻转) it back? Not exactly—here’s why.
The image formed in your eye is upside down, but your brain does not need to flip it. First, the brain doesn’t “see” an image like a photo. It receives nerve signals that tell it what you’re looking at and where things are. Second, your brain has always worked this way—from the time you were born, it learned to understand these signals correctly. So everything looks right to you, and you can move and communicate with the world just fine.
素材来源: The Week Junior Science + Nature
(
A. Light.
B. Smell.
C. Shape.
D. Direction.
(
A. What eyes can do.
B. Why we need eyes.
C. How eyes see.
D. Which way is up.
(
A. The cornea.
B. The lens.
C. The retina.
D. The optic nerve.
(
A. ①/②③④
B. ①②③/④
C. ①/②③/④
D. ①②/③④
KEY→P6
范畴:人与自我
主题:自我认识
体裁:说明文
难度:★★★★
建议用时:8分钟
评价:/4
热考素材 跨学科·生物 Your eyes need light to see. The things you see either make their own light (like a candle or a phone screen), or reflect light from somewhere else into your eyes. Most objects reflect light.
First, light enters the eye through the front parts like the cornea(角膜) and lens(晶状体). These parts work together to focus the light onto the back wall of the eye, the retina(视网膜), which has special cells(细胞) that sense light. The pupil(瞳孔) controls how much light comes in. This allows you to see clearly and protects your eyes. The lens adjusts itself to focus on objects that are near or far—this is called accommodation(调节).
While the lens focuses light, it also turns the image upside down. This means light from the top of an object hits the bottom of the retina, and light from the bottom hits the top. The retina’s light-sensitive cells then send this upside-down picture to your brain through the optic nerve(视神经). Does your brain have to flip(翻转) it back? Not exactly—here’s why.
The image formed in your eye is upside down, but your brain does not need to flip it. First, the brain doesn’t “see” an image like a photo. It receives nerve signals that tell it what you’re looking at and where things are. Second, your brain has always worked this way—from the time you were born, it learned to understand these signals correctly. So everything looks right to you, and you can move and communicate with the world just fine.
素材来源: The Week Junior Science + Nature
(
A
)1. What can help us see according to the text?A. Light.
B. Smell.
C. Shape.
D. Direction.
(
C
)2. 新考法·图文结合 What can the picture in the passage tell us?A. What eyes can do.
B. Why we need eyes.
C. How eyes see.
D. Which way is up.
(
B
)3. What helps to turn the image upside down?A. The cornea.
B. The lens.
C. The retina.
D. The optic nerve.
(
C
)4. What would be the best structure of the passage?A. ①/②③④
B. ①②③/④
C. ①/②③/④
D. ①②/③④
答案
本文介绍了我们的眼睛是怎么工作的以及大脑是怎样处理眼睛所看到的图像的。
1. A 细节理解题。根据"Your eyes need light to see."可知,光帮助我们看见东西。
2. C 图文结合题。根据第二段和第三段对眼睛的工作原理的介绍可知,这个图片是介绍眼睛是怎样看见的。
3. B 细节理解题。根据"While the lens focuses light, it also turns the image upside down."可知,是晶状体使图像倒置。
4. C 篇章结构题。第一段介绍眼睛需要光才能看见,第二段、第三段介绍眼睛的工作原理,第四段介绍大脑对眼睛发送的图片是如何处理的。故本文结构为①/②③/④。
1. A 细节理解题。根据"Your eyes need light to see."可知,光帮助我们看见东西。
2. C 图文结合题。根据第二段和第三段对眼睛的工作原理的介绍可知,这个图片是介绍眼睛是怎样看见的。
3. B 细节理解题。根据"While the lens focuses light, it also turns the image upside down."可知,是晶状体使图像倒置。
4. C 篇章结构题。第一段介绍眼睛需要光才能看见,第二段、第三段介绍眼睛的工作原理,第四段介绍大脑对眼睛发送的图片是如何处理的。故本文结构为①/②③/④。
