试题详情
阅读理解-单选/选择5题 0.65 引用1 组卷49

Have you ever seen a colorful rainbow in the sky right after it rains? That happens when the sunlight goes through the water in the air.

The sun’s light is actually made of many colors that don’t all move the same way. When this light goes into a raindrop, it bends (弯曲) a bit and splits into (裂成) all these colors like red, orange, yellow, green, blue, and purple.

As these colors come out of the raindrop, they bounce off (弹回) the inside back of the drop. This makes them bend again and spread out, making a shape like part of a circle, which is the rainbow we see. Purple bends a lot, but red not so much.

So, why do rainbows look like a curve? It’s because the raindrops are not all the same distance (距离) from us. They make a circle shape around a line from the sun to our eyes, creating that curve.

Rainbows are usually seen in the part of the sky opposite the sun. Sometimes, you might even see two rainbows at once! That’s when the sunlight bounces twice inside the raindrops.

Next time you see a rainbow, remember it’s just the sun and rain working together to make something really special and pretty in the sky.

【小题1】What makes the sunlight show many colors?
A.The sun moves very fast.
B.The air near the raindrops gets warm.
C.The clouds break the sunlight.
D.The sunlight goes into a raindrop and bends.
【小题2】What is the correct order of the process that creates a rainbow?
①Sunlight goes into a raindrop.   ②The sunlight splits into many colors.   ③Colors bounce off the inside back of the drop.   ④The colors bend again and spread out.
A.①→②→③→④B.①→③→②→④C.②→①→③→④D.②→③→①→④
【小题3】Where does a rainbow usually appear in the sky?
A.Right above you.B.Close to the sun.C.Opposite the sun.D.All around the sky.
【小题4】What does the underlined word “curve” mean in Chinese?
A.弧线B.直线C.三角D.立体
【小题5】What’s the best title for the passage?
A.The Sun and Its Magic
B.How Rainbows Form
C.Raindrops and Light
D.The Colors of the Sky
2024·云南楚雄·三模
知识点:自然科学科普知识说明文 答案解析 【答案】很抱歉,登录后才可免费查看答案和解析!