2024.4.7英语阅读理解练习

How Things Move

We can watch things around us move. When something is in motion, it changes its position. Objects can move from one place to another. They can move in many directions. If you roll a ball, it might move in a straight line. It might also move in a curve. A swing can move back and forth. A light switch can move up and down. Fans have blades that move in a circle.

If you want to know if something is moving, you can compare it to other things around it that are not moving. If the things behind the object are changing, the object is probably moving. If they are not changing, the object is probably not moving.

You can measure the distance an object moves. Just measure the distance between where it was when it started to move and where it was when it stopped. Distance can be measured in inches, feet, yards or miles. Those measurements are in the customary system. It can also be measured in millimeters, centimeters, meters and kilometers. Those measurements are in the metric system.

1. What happens when a ball is rolled?
A. It can move in a straight line or a curve. B. It can move up and down.
C. It can move in a circle. D. It can move back and forth.

2. You are around 145 _________ tall.
A. millimeters B. centimeters C. meters D. kilometers

3. What’s the Chinese for “probably”?
A. 很可能 B. 不可能 C. 慢慢地 D. 快速地.

4. When something is in motion, what does it change?
________________________________________________________________

5. How does a light switch move?
________________________________________________________________

6. How can you test if something is moving or not?
________________________________________________________________

2024.4.6英语阅读理解练习

Color Shows Mood

Artists use color to create patterns. Color can also show different moods. Bright colors make us feel happy and energetic. Dark colors make us feel calm or sad.

The primary colors are red, yellow, and blue. They are the colors that can be mixed together to make different colors. Mixing two primary colors makes a secondary color. The secondary colors are orange, green, and violet (purple). Orange is made by mixing yellow and red. Green is made by mixing yellow and blue. Violet is made by mixing red and blue. Intermediate colors can be made by mixing a primary and a secondary color together. Some intermediate colors are blue violet and red orange. Black, white, and gray are special colors. They are called neutral colors.

Colors have been organized into a color wheel. It shows the three primary colors, the three secondary colors, and the six intermediate colors. Artists use the color wheel. It helps them know which colors they want to use together.

1. How may an artist use colors to influence(影响) the viewer’s mood?
A. By using only primary colors.
B. By using bright colors to evoke feelings of sadness.
C. By using dark colors to make the viewer feel energetic.
D. By using bright colors to make the viewer feel happy and energetic.

2. What can be created by mixing a primary color and a secondary color together?
A. A neutral color. B. A primary color. C. An intermediate color. D. A secondary color.

3. What is the purpose of the color wheel for artists?
A. It helps them mix primary colors to create secondary colors.
B. It helps them decide which colors to use together.
C. It helps them create neutral colors like black, white, and gray.
D. It helps them create patterns with colors.

4. What are the primary and secondary colors?
________________________________________________________________

5. Tell four neutral colors according to(根据) the text:
________________________________________________________________

6. What’s the Chinese for “intermediate colors”?
A. 过渡色 B. 中间色 C. 三原色 D. 混合色

2024.3.29英语阅读理解练习

The New Girl

There was a new family in the neighborhood. They had a little girl about Fiona’s age, and Fiona really wanted to meet her. The first time Fiona saw the new girl in school, she smiled and said hello. When she saw her on the bus home from school, Fiona asked if they could sit together, and she told the new girl all about their neighborhood. One afternoon a few days later, when Fiona was outside playing with some of her friends, the new girl came outside. She stood in her front yard, looking uncomfortable. Fiona smiled, and waved, and called to her, and invited her to come and play, which her new friend was happy to do!

What’s the new girl’s name?
A. Fiona B. Neighborhood C. Not sure.

She stood in her front yard. Who is she?
A. Finoa B. The new girl C. Not sure.

She stood in her front yard, looking uncomfortable. “looking uncomfortable” means ________________________.
B. looking for something B. not feeling good C. thinking about something. D. Interesting in something.

What is the main idea?
A. Fiona takes the bus to school.
B. There is a new family in the neighborhood.
C. Fiona is a very friendly girl.

Which of the following is a supporting idea?
A. Fiona smiles and says hello.
B. The family has a girl about Fiona’s age.
C. There is a new family in the neighborhood.

2024.3.28英语阅读理解练习

Our elementary school chorus had the largest participation in its history this year. They did eight performances – three in school, and five around town – and received an award for Most Improved School Vocal Group from the state. There was a lot of great talent, and ten students make All County Chorus.

1. What’s the Chinese for “chorus”?
A. 合唱团 B. 诗社 C. 跳踢队 D. 球队

2. What does the text tell?
A. Our elementary school chorus is very popular.
B. Our elementary school chorus had a very successful year.
C. There are a lot of students in our elementary school chorus.

Helen held the new baby carefully in her lap, while her anxious parents hovered nearby. Helen could hardly believe how tiny she was. Helen’s heart swelled with pride, and a new sense of responsibility.

1. Helen’s heart swelled with pride means ______________.
A. Her heart is beating with pride.
B. Her heart is full of pride.
C. Her heart stops with pride.
D. Her heart has nothing to do with pride.

2. What does the text tell?
A. Helen is going to take care of the baby.
B. Helen is a nurse.
C. Helen has a new baby sister.

2024.3.27英语阅读理解练习

Food is our fuel

Everything that is alive needs energy. All animals get the energy they need from food. People are animals. Think about the human body as an amazing machine. It can do all kinds of things for us. Food is the fuel that helps keep the amazing machine running.

Plants use sunlight to make their own food. Animals are not able to do that. Some animals eat plants. Some animals eat other animals as meat. Some animals, like people, eat both plants and animals.

Since plants make their own food using sunlight, the Sun’s energy is found in plants. The Sun’s energy is very strong. It loses a lot of its strength by the time it goes into a plant.

When we eat plants, we get more of the sun’s energy than when we eat animals. That’s why it is good to eat fruits and vegetables. When an animal eats a plant, the energy is less strong. The animal also used its energy to find the plant to eat. When a second animal eats the first animal, it gets even less energy than the first animal got. The second animal used a lot of energy to chase its prey.

Like a car that has to be filled with gasoline, living things have to eat again and again. Instead of gasoline, living things use food as fuel.

1. What’s the Chinese for energy?
A. 精神 B. 食物 C. 能量 D. 动物

2. Where do all animals get their energy?

3. Where do plants get their energy?

4. If our bodies are amazing machines, then food is our _____________________.

5. Why do we get more energy from eating vegetables than we get from eating meat?

6. If a third animal eats the second animal, will it get more or less energy?

It’s time for Chinese class前面到底要不要冠词a?

在大胖的知识点上出现两个“奇怪”的句子:

It’s time for Chinese class. = It’s time to have a Chinese class.

前一句没有冠词a,后一句却有a。那么到底要不要“a”呢?

事实上有没有冠词a都可以,两个句子都是正确的,不过二者表达的意思稍有不同。

表达一般意义上的“该上语文课了”,习惯上不用冠词a:

It’s time for Chinese class.

下面的例子则说明了为什么用冠词a:

We just had 3 English classes. It’s time for a Chinese class.

2024.3.24英语、数学(追及应用题)综合练习

Tom and Jerry are having a ______. Tom begins running from Point A to Point B. The distance(距离) ______ Point A and Point B is ______ meters. He runs at a speed of ______ meters per second. ______ seconds after Tom ______, Jerry begins running from Point A to Point B. Jerry runs at a speed of ______ meters per second.
(杰瑞多少时间后能追上汤姆?)
Note:1 meters per second=1 m/s

1. 根据录音填写原文中的空白处所缺的单词,如果是数字,请直接写阿拉伯数字。

2. 请根据中文意思,将最后的问题用英语完整写在下面:
_____________________________________________________________________

3. 请根据这段文字和你听到的数据,用方程计算杰瑞多少时间后能追上汤姆。(解、设、方程、答,缺一不可)

4. Tom and Jerry, who runs first and who runs faster?

5. Please calculate(计算), who will reach Point B first?

4个0和4个8一共可以组成多少个不同的8位数?

这个题目并非难题,但比较考察孩子们的思维能力和分组能力。

注意到8位数的最高位不能为0,因此我们可以把原题转化为:

将4个0随意填入8__8__8__8__当中,空可以不填,一共可以构成多少个8位数?

下面我们将4个0分组:

1. 0000

只有4种填法。

2. 000 0
先填000,有4种填法;
再填剩余的一个0,有3种填法;
根据乘法原理,4×3=12。

这种情况也可以4个空取2个进行全排列:P(4,2)=12。

3. 00 00
注意对称性,4个空取2个:C(4,2)=6。

4. 00 0 0
先填00,有4种填法;
再填剩余的2个0,C(3,2)=3;
根据乘法原理:4×3=12

5. 0 0 0 0
显然只有1种填法。

以上分组结果相加:
4+12+6+12+1=35

这个题目用计算机编程来做则更快,思路就是从8000000到9000000遍历,验证数字恰好包含4个0和4个8即可,只需4行代码。

究竟是do some/more exercise还是excercises?

最近在大胖五年级下的知识点中出现了一个词组:

do some exercise

那么问题来了,这里的exercise应该用复数形式exercises吗?还是单复数都行?

在说答案之前,我们先看三个练习题:

1. Hey Tom, you didn’t do well in the final exam. You’d better do more __________.
A. exercise B. exercises

2. Hey Tom, you look unhealthy recently. You’d better do some ________.
A. exercise B. exercises

3. Hey Tom, we’re going to have a jump rope match next week. You need to do more _________.
A. exercise B. exercises

exercise表示作业的“练习”的时候,是可数名词,因此用some或者more的时候后面要跟复数形式exercises。这样上面的第1小题答案就是B。

exercise表示体育“锻炼”这个意思的时候,既可以作可数名词,又可以作不可数名词。因此下面四种表达都是正确的:
do some/more exercise
do some/more exercises

exercise用单数和复数的区别在于:单数exercise表示泛指做各种体育锻炼;复数exercises表示多做某个特定的体育锻炼。

现在回到上面的2、3小题。
第2题说汤姆看起来状态不行,那么显然是建议他多做“各种体育锻炼”,选A,不可数。
第3题说汤姆下周要参加跳绳比赛,建议他多做跳绳这种特定的体育锻炼,选B,可数。

在一个平面内,究竟是点的数量多还是直线的数量多?

前几天在和大胖聊基本概念的时候,提到了几个数学概念的判断题:

1. 自然数和小数哪个更多?

2. 1和2之间的小数多,还是2和3之间的小数多?(不包括1、2、3)

3. 正数和负数哪个更多?

上面的概念都涉及到“无限”数量的比较,一般来说有两个办法:

1. 集合论中的“整体大于部分”;

2. 一一映射,用于判断两个集合相等。

所以回过头来看第1问,每一个自然数(0、1、2、…)后面带上小数点尾巴,就能变成无数个小数,因此显然自然数的数量要比小数的数量小。

第2问,1和2之间的小数加上1之后就变到2和3之间去了,因此1和2之间的小数同2和3之间的小数存在一一映射的关系,所以数量是一样多。

第3问,正数和负数就是符号的变化,很简单的一一对应,因此正数和负数应该是一样多。

下面真正的难题来了:

在一个平面内,点的数量多还是直线的数量多?

粗略分析:每一条直线上都有无数个点,好像是直线的数量更多;但从另一个角度来看,经过每一个点都可以画无数条直线,又好像是点的数量更多。那么难道是一样多吗?思路仿佛陷入了僵局。

这个问题要让小学生来思考确实要求过高了,不过作为“头脑风暴”的题材还是不错的。

下面是胖爸的分析:

考察坐标系上的点和直线。

所有的点都可以表示成(x,y),x、y都是实数。因此两个任意实数可以构成平面上的所有的点集。

考察直线方程:y=kx+b,k和b都是实数,因此两个任意实数(k、b)可以构成平面上所有方程为y=kx+b的直线。

综合以上两点,平面上的点和方程为y=kx+b的直线的数量一样多。

不过要注意,y=kx+b并不能表示平面上与y轴平行的垂线,所以平面上的直线要比点多,多出来的那些直线就是所有和y轴平行的直线。