三年级微积分应用英语阅读理解20题

三年级微积分应用英语阅读理解20题
1
<背景文章>
Calculus is a very interesting subject. Let me tell you a little bit about it. Calculus is all about change. Functions are very important in calculus.
A function is like a magic box. You put something in, and something else comes out. For example, if you have a function that takes a number and doubles it. If you put 3 into this function, you get 6. Isn't that amazing? Functions can be used to describe many things in our world.
1. What is calculus all about?
A. Colors
B. Change
C. Animals
D. Fruits
答案：B。

解析：文章中明确提到Calculus is all about change.。

2. What is a function like?
A. A book
B. A magic box
C. A pencil
D. A chair
答案：B。

解析：文中说 A function is like a magic box.。

3. If a function doubles a number and you put 4 into it, what do you get?
A. 2
B. 4
C. 6
D. 8
答案：D。

解析：因为函数是将数字翻倍，4 翻倍是8。

4. Functions can be used to describe what?
A. Cars
B. Clothes
C. Many things in our world
D. Toys
答案：C。

解析：文中提到Functions can be used to describe many things in our world.。

5. What happens when you put a number into a function?
A. Nothing
B. You get the same number back
C. Something else comes out
D. You get a flower
答案：C。

解析：文章中说You put something in, and something else comes out.。

2
<背景文章>
Calculus is not only for big people. Even kids in third grade can understand some simple applications of calculus in daily life. For example, when we ride a bike, we can think about how our speed changes. If we start from a stop and then go faster and faster, that's like calculus in action. Another example is when we throw a ball up in the air. The ball goes up and then comes down. We can use calculus to understand how the height of the ball changes over time.
Now let's think about a car driving on the road. The car starts slowly and then speeds up. We can use calculus to figure out how fast the car is going at different times. This is just a simple way to understand calculus in our daily lives.
6. What can we use calculus for in daily life?
A. To draw pictures.
B. To count numbers.
C. To understand how things change.
D. To play games.
答案：C。

中文解析：在日常生活中，微积分可以帮助我们理解事物是如何变化的，比如骑车时速度的变化、扔球时球高度随时间的变化以及汽车行驶时速度的变化等。

7. When we ride a bike and go faster and faster, what is this like?
A. Playing basketball.
B. Doing homework.
C. Calculus in action.
D. Watching TV.
答案：C。

中文解析：当我们骑自行车并且速度越来越快时，这就像是微积分在起作用。

8. What can we use calculus to understand when we throw a ball up in the air?
A. How the ball looks.
B. How the ball feels.
C. How the height of the ball changes over time.
D. How loud the ball is.
答案：C。

中文解析：当我们把球扔到空中时，我们可以用微积分来理解球的高度随时间是如何变化的。

9. If a car starts slowly and then speeds up, what can we use calculus to figure out?
A. How many colors the car has.
B. How fast the car is going at different times.
C. How big the car is.
D. How old the car is.
答案：B。

中文解析：如果一辆汽车开始慢慢地行驶然后加速，我们可以用微积分来算出汽车在不同时间的速度是多少。

10. What is a simple way to understand calculus in our daily lives?
A. Eating ice cream.
B. Sleeping.
C. Thinking about how things change.
D. Singing songs.
答案：C。

中文解析：思考事物是如何变化的是一种理解日常生活中微积分的简单方法。

3
<背景文章>
Once upon a time, there was a very smart little boy named Tom. Tom was in the third grade. One day, his teacher talked about a very special kind of math called calculus. Tom was very curious. Later, when he was playing in the park, he saw a problem. There were some balls on the ground. He wanted to know how many ways he could arrange them. Tom remembered what he learned about calculus. He started thinking and using his new knowledge. After a while, he figured out the answer. Tom was very happy and proud of himself.
>
11. What kind of math did Tom's teacher talk about?
A. Addition
B. Subtraction
C. Calculus
D. Multiplication
答案：C。

解析：文章中明确提到“One day, his teacher talked about a very special kind of math called calculus.”，所以答案是C。

>
12. What did Tom see in the park?
A. Flowers
B. Trees
C. Balls
D. Birds
答案：C。

解析：文中提到“Later, when he was playing in the park, he saw a problem. There were some balls on the ground.”，所以答案是C。

>
13. What did Tom want to know about the balls?
A. How many colors they were
B. How big they were
C. How many ways he could arrange them
D. How heavy they were
答案：C。

解析：“He wanted to know how many ways he could arrange them.”这句话表明了Tom 想知道他可以用多少种方式排列这些球，所以答案是C。

>
14. What did Tom use to solve the problem?
A. His hands
B. His eyes
C. His new knowledge about calculus
D. His friends
答案：C。

解析：文中提到“He remembered what he learned about calculus. He started thinking and using his new knowledge.”，所以答案是C。

>
15. How did Tom feel after he figured out the answer?
A. Sad
B. Angry
C. Happy and proud
D. Tired
答案：C。

解析：“Tom was very happy and proud of himself.”表明Tom 算出答案后很开心且自豪，所以答案是C。

4
<背景文章>
Calculus is a very important branch of mathematics. It has a long history. Long ago, smart people began to think about how to measure things that change. They wanted to know how fast things are moving or how much area is under a curve. Over time, more and more people worked on calculus
and made it better. Today, calculus is used in many fields like science, engineering, and economics.
16. Calculus is used in many fields like ___.
A. art and music
B. science and engineering
C. history and geography
D. sports and games
答案：B。

解析：文章中提到“Today, calculus is used in many fields like science, engineering, and economics.”，所以答案是B。

17. Long ago, people wanted to know ___.
A. how many colors there are
B. how fast things are moving
C. how to draw pictures
D. how to sing songs
答案：B。

解析：文章中提到“They wanted to know how fast things are moving or how much area is under a curve.”，所以答案是B。

18. Smart people began to think about calculus because they wanted to ___.
A. play games
B. measure things that change
C. count numbers
D. tell stories
答案：B。

解析：文章中提到“Long ago, smart people began to think about how to measure things that change.”，所以答案是B。

19. Over time, calculus became ___.
A. worse
B. the same
C. better
D. smaller
答案：C。

解析：文章中提到“Over time, more and more people worked on calculus and made it better.”，所以答案是C。

20. The history of calculus is ___.
A. short
B. very long
C. not interesting
D. only for adults
答案：B。

解析：文章中提到“It has a long history.”，所以答案是B。