《2025年点津英语天天练英语时文阅读八年级》

The eyes of animals are amazing
动物的眼睛很神奇
World Sight Day is held every year on the second Thursday of October. The festival reminds us to love and protect our eyes. Human eyes come in different colours, but they all work in the same way. In the animal world, however, there are many kinds of special eyes.
Owls(猫头鹰) see well in the dark. Their eyes have retina(视网膜), just as human eyes do. The retina is a layer of cells at the back of the eye. Like the retina in a human eye, an owl's retina is made up of two kinds of cells: rod cells(杆细胞) and cone cells(锥细胞). Rod cells help us see in low light, and cone cells help us see colours. Owls have far more rod cells in their eyes than humans. This gives them good night vision.
Also, some animals can look at two places at once, like the four-eyed fish. The fish is so called because each of its eyes is divided into upper and lower halves. Each half has its own pupil(瞳孔) and retina. This means they work as separate eyes. The upper halves look above the water, while the lower halves watch for danger below.
Chameleons(变色龙) can also look at two places at once. They can move each of their eyes separately. This gives them nearly 360-degree vision. This is very useful when they are hunting for insects. The chameleon can keep a close watch on an insect without moving its head. Tarsiers'(眼镜猴) eyes, however, are very different from chameleons'. These small monkeys' big eyeballs are fixed in place. What does this mean for the animals? Well, they need to keep turning their heads to look around!
(D) 1. What can we know from paragraph 2?
A. Rod cells help owls see in high light.
B. Owls' eyes have the same rod cells as humans.
C. The retina is a layer of cells in front of an owl's eye.
D. Owls have far more rod cells in their eyes than humans.
(C) 2. Why can the four-eyed fish look at two places at once?
A. Because its eyes have good vision.
B. Because its eyes has rod cells and cone cells.
C. Because each of its eyes has upper and lower halves.
D. Because its eyes watch for danger well.
(B) 3. What does the last paragraph mainly talk about?
A. The difference between chameleons' and tarsiers' life.
B. The difference between chameleons' and tarsiers' eyes.
C. The reason why chameleons look at two places at once.
D. The reason why tarsiers turn their heads to look around.
(C) 4. How does the writer develop his/her ideas in the article?
A. By making surveys.
B. By asking questions.
C. By giving examples.
D. By sharing feelings.

答案： 1. D 根据第二段中的“Owls have far more rod cells in their eyes than humans.”可知，猫头鹰眼睛中的杆细胞比人类眼睛中的杆细胞多得多。故选 D。
2. C 根据第三段中的“The fish is so called because each of its eyes is divided into upper and lower halves.”可知，四眼鱼可以同时看两个地方，是因为它的每只眼睛都被分成上下部分。故选 C。
3. B 根据最后一段内容可知，最后一段主要说明了变色龙的眼睛和眼镜猴的眼睛不同之处及其原因。故选 B。
4. C 通读全文内容可知，文章列举了几种动物的特殊的眼睛。因此作者是以举例子的方式证明其观点。故选 C。