Do you know how many kinds of plants and animals there are in the world? Maybe one million (百万)? Two million? No, not even close! Scientists think there are between eight and fourteen million kinds of plants and animals, but we only know about 1.8 million now. They are slowly finding new kinds all the time, and that’s good news for us.
In 2009, a group of scientists went to the rainforest to search for new kinds of animals. They had to walk silently and looked really carefully. They found a tiny frog (青蛙) that is smaller than the end of your smallest finger! They found another frog, too. That looks like it is made of glass. The scientists also found seven new kinds of grasshoppers (蚱蜢). Some of them are very beautiful.
Scientists tell us that frogs and insects (昆虫) are very important. They help to keep our environment clean. We can also use them to make new medicines. Researchers all over the world are working very hard to find new plants and animals every day. But their jobs are getting harder, because forests where these animals live are quickly disappearing (消失) and the animals are, too.
1. We only know about2. Scientists walked silently and
3. Scientists can use
4. The disappearance of forests makes scientists’ jobs
5. Do you think plants and animals are important? Why or why not?
Do some colors make you feel calm while others give you energy? Scientists have studied the connection (联系) between color and mood (心情) for a long time. Many believe that color can influence (影响) our moods.
Warm, bright colors such as yellow and red are positive colors. They can give people a pleasant feeling. Cool colors such as blue, purple and green are relaxing colors. They help people experience calm feelings.
Many public places are decorated (装饰) with certain colors in order to create certain moods. Orange makes people feel hungry, and many restaurants are painted this color.
People use colors in their homes to create moods as well. Blue is a peaceful color. It helps you rest, so it is a very good color for a bedroom.
Colors can create bad moods, too. Some types of blue make people feel sad. Red can make people feel angry.
What is your mood right now? Now look at the color of the walls round you. Does it match your mood?
1. Cool colors are relaxing colors and they help people experience2. Orange makes people
3. People use colors in their homes to
4. Some types of
5. What does this passage mainly tell us?
Take a look at this year’s calendar, what do you see? February 29th! It comes around only once every four years during a leap year (闰年), like this year. So, why do we need it?
It takes 365.25 days for Earth to go around the sun once. We call this a solar year (太阳年). But our calendar year is only 365 days. That’s why we have leap years. They help make our calendar more accurate (准确的).
The difference between the two numbers may seem small, but think of it over a long time. If we didn’t have leap years, in a few hundred years’ time, July would actually happen during the cold winter months, said NASA.
Leap years usually happen every four years, but sometimes there are special rules. When a year is a century year, like 1900 or 2000, if the year is divisible (可整除的) by 100 and not divisible by 400, then it is not a leap year. So, 1900 was not a leap year, but 2000 was.
Here are some fun facts about the leap year. For example, people born on February 29th celebrate (庆祝) their birthdays on February 28th or March 1st, not wait four years. In some places, people think February 29th is a good time to do special things, like having a party or getting married (结婚).
1. We can meet a leap year only once2. Leap years can make
3. According to Paragraph 4, the year of
4. People can
5. Do you think the leap year is important? Why or why not?
4 . What’s behind a Chinese name?
What does your first name mean? In China, first names always have special meanings. They show the culture of an era.
In the old days, first names such as Wangcai (旺财) making the family prosperous and rich were popular (流行的). During the 1950s and 1960s, many boys had first names such as “building the country” (Jianguo) and “celebrating National Day” (Guoqing). Girls had names of flowers like Guihua and Hehua.
During the 1970s, many children got the first name of Bo, or Yuhang. Their parents wanted them to learn more and have big dreams. In 2010, the Shanghai World Expo made Shibo (世博) a popular first name. Over (超过) 6,200 babies (婴儿) got the name of Shibo in the first nine months of that year, according to Xinhua News Agency.
1. In the old days, which first name was popular?A.Goudan. | B.Wangcai. | C.Shibo. |
A.Jianguo | B.Guihua | C.Hehua |
A.they wanted their family rich |
B.they hoped their children to build the country |
C.they wanted their children to learn more and have big dreams |
A.6,100. | B.6,200. | C.6,300. |
5 . The earth is about 4,600 million years old. Modern man has lived on the earth for only 35,000 years, but during that time, we have changed our planet in many ways. Many of the things that we have done are good, but more are not good for the earth.
Water Pollution
A lot of people, birds and fish die each day because of water pollution. Factories have polluted the land and the water. As a result, many rivers and lakes are now dead.
Air Pollution
In big cities, factories, as well as cars, trucks and buses are the main causes of air pollution. Many people in cities now have serious health problems. For example, Mexico city used to be a beautiful sunny capital, but today it is always covered by thick brown clouds.
Soil Pollution
In order to have a good harvest, most of the farmers use chemicals too much in their fields. That’s bad for the soil. But this kind of pollution is difficult to stop.
Hope For The Future
These problems are very serious for our future, so all of us should do something to improve our environment. If we can stop pollution, our planet will become more and more beautiful and our health will be better. Let’s be greener people!
1. ________ have made the earth change a lot.A.Human beings | B.Animals | C.Plants |
A.two | B.three | C.four |
A.Pollution | B.Population | C.Education |
A.We must stop the factories from pouring waste water into the rivers and lakes. |
B.Because of water pollution, many rivers and lakes are now dead. |
C.Most of the things that we have done are good for our planet. |
A. suffer B. lead C. hurt D. of E. but F. because of |
Air pollution influences our health in many ways. When the air is polluted, not only young children and old people
At 10:44 a.m. on June 5th, 2022, China sent its astronauts(宇航员) Chen Dong, Liu Yang and Cai Xuzhe, into space. They joined in the latest Shenzhou ⅩⅣ mission(任务). Do you want to become astronauts like them? How can they become astronauts?
Be healthy
To be an astronaut, you need to be healthy. It is important for them to have a healthy body. You can’t have other small problems. For example, you can’t have scars(伤疤). They may split in space. It’s very dangerous.
Become stronger through hard training(训练)
For example, you need to be strong like sports players. You will also wear a 200-kilogram uniform and do missions underwater for six or seven hours without eating or going to the toilet(厕所). It is useful for these astronauts to face the space.
Learn science
Learning is important, too. Astronauts take 60 classes to get ready for a mission like math, English, spacecraft design, physics and many more. So they will know what to do when something bad happens during the mission.
1. What special cloth should an astronaut wear?A.A beautiful uniform. | B.A 200-kilogram uniform. | C.A 200-kilogram coat. |
A.Because it means you are not healthy. |
B.Because it is very dangerous in space. |
C.Because it shows you are not strong enough. |
A.What it takes to do to become an astronaut? |
B.Why it’s difficult to become an astronaut? |
C.How astronauts do missions underwater. |
A.a diary entry | B.a guidebook | C.a science book |
8 . The first modern Olympic Games was held in Athens in 1896. Since then many countries have successfully held the Olympics, such as England, France, Germany, Canada, the USA and so on. After more than a century, in 2004 the Games returned to its hometown, Athens.
The Olympic Games is held every four years. When people hold it, they always make an emblem(会徽). The emblem of the Athens Olympic Games is a white circle of olive branches in the sky. China held the 29th Olympic Games in Beijing in 2008. And China made a seal(印章)as the emblem of the Beijing Olympic Games. The emblem has a single Chinese character(字)on the seal and means “Chinese Seal, Dancing Beijing”. Below(在……的下面)it, there are the words “Beijing 2008”. The character in the emblem is “Jing”. It means “capital(首都)” of China and it is also like a runner or a dancer. The running figure(人形)on the emblem shows the spirit of the Olympics—faster, higher and stronger.
1. The first modern Olympic Games was held in Athens in ________.A.2008 | B.2004 | C.2000 | D.1896 |
A.It’s a red seal with a single character. | B.It’s a white circle of olive branches in the sky. |
C.It’s a five-ring flag. | D.It’s a white circle of olive branches in the sea. |
A.Canada. | B.Australia. | C.China. | D.The USA. |
A.“Jing” | B.“Bei” | C.“Ting” | D.“Hai” |
A.Many, more and most | B.Far, further and furthest |
C.Good, better and best | D.Faster, higher and stronger |
9 . It’s said that about half of the men in China smoke.
More and more people begin to know how
In fact, smoking does great
To keep healthy, we should give up the
A.Still | B.Even | C.Just |
A.easy | B.exciting | C.serious |
A.stop | B.begin | C.give |
A.must | B.can’t | C.can |
A.pity | B.harm | C.hurt |
A.suggestion | B.headache | C.dream |
A.because | B.so | C.but |
A.First | B.Second | C.Third |
A.money | B.time | C.messages |
A.good | B.big | C.bad |
A. in B. how C. and D. important E. some F. a G. what |
Born as the Dong people in Guizhou, Yang Xiuying, 74, has been making indigo cloth(蓝靛染布)since she was a young girl. For the Dong people, making indigo cloth has
This traditional way of making indigo cloth, unfortunately, is now
Local governments want to save the tradition
The Dong people consider indigo cloth as