Do you want to know how and why a fall leaf changes color? We first have to understand what leaves are and what they do.
Leaves are the world’s food factories. Plants take water from the ground through their roots and take CO2 from the air. Plants use sunlight to turn water and CO2into glucose(葡萄糖), a kind of sugar. Plants use it as food for energy and growing.
A chemical called“chlorophyll”in the leaves gives plants their green colour. As summer ends and autumn comes, the days get shorter and shorter, and trees “know” to begin getting ready for winter.
During winter, there is not enough sunlight or water. Trees rest during this time and live on the food they store during the summer. They begin to shut down their food-making factories. As the green chlorophyll disappears from the leaves, we begin to see yellow and orange leaves.
The bright reds and purples we see in leaves are made mostly in autumn. In some trees, like maples, sunlight and the cool nights of autumn turn the glucose in the leaves into a red colour. And we can enjoy the beautiful red leaves during autumn.
1.Which should be in the box? sunlight+
+CO2
glucose
A.air B.sugar C.water D.wind
2.The underlined word “chlorophyll” means __________.
A.叶绿素 B.脂肪 C.蛋白质 D.淀粉
3.The leaves turn yellow because they are short of(缺少) __________.
A.water and CO2
B.glucose and energy
C.sunlight and water
D.sunlight and CO2
4.Which of the following is NOT true?
A.When autumn comes, the days get shorter and shorter.
B.During winter trees live on the food they store in summer.
C.During winter some of yellow and orange colors are still in the leaves.
D.Trees begin to stop making food in summer.
5.This passage tells us_____________.
A.the plants can grow well only with the sunlight
B.there are all kinds of plants on the earth
C.not all the colors of the leaves are from chlorophyll
D.maple leaves change the color as other trees
It is said that more than four million people die each year from smoking. That number is increasing.
Seven in ten of those deaths are in developing countries. These numbers are frightening.Yet people around the world continue to smoke. The Great American Smoke out has been founded for twenty-five years to show the dangers of smoking and provide support for people who decide to stop smoking. The American Cancer Society says all cigarettes damage the body. It warns that smoking even a small number of cigarettes is dangerous. It is not easy to give up smoking forever. However, doctors say they probably will live longer if they do stop smoking. They will feel better and look better. They also will protect the health of family members who breathe their smoke.
The American Cancer Society says there is not just one right way to stop smoking. Any useful way to stop smoking is worth trying. They may take long walks or spend time in places where smoking is not allowed. Also, they could eat a small piece of fruit instead of having a cigarette.
The American Cancer Society says the sooner smokers stop smoking, the more they can reduce their chances of getting cancer and other diseases. It says blood pressure returns to normal twenty minutes after smoking the last cigarette. Carbon monoxide ( 一氧化碳 ) gas levels in the blood return to normal after eight hours. After one day, the chance of heart attack decreases. After one year, the risk of heart disease for a non-smoker is half that of a smoker. Stop smoking before smoking stops you!
1.How many people die from smoking in developing countries each year?
A.2,600,000. B.2,700,000. C.2,800,000 D.2,900,000
2.The Great American Smoke out is _____.
A.to provide help for smokers B.to show what harm smoking does to smokers
C.to offer advice to smokers D.to make smokers aware of harm and give them help
3.What may happen to people themselves if they stop smoking?
A.They will probably live longer. B.They will probably feel better.
C.They will probably look better. D.All of the above.
4.Which of the following is NOT true?
A.It is not easy to stop smoking.
B.The chance of heart attack becomes less after you stop smoking.
C.It is more likely for a smoker to suffer from disease.
D.It is less helpful for a smoker suffering heart attack to stop smoking.
5.The passage is probably from _____.
A.a newspaper B.a science report C.a sports magazine D.a storybook
When I was a kid in Minnesota, watermelons were expensive. One of my father’s friends, Bernie, was a rich businessman, who owned a large store in St. Paul.
Every summer, when the first watermelons arrived, Bernie would call. Dad and I would go to Bernie’s place. We’d sit on the edge of the dock ( 码头 )and got ready for a big meal. Bernie would take his knife, cut our first watermelon, hand us both a big piece and sit down next to us. Then we’d bury our faces in watermelon, eating only the heart — the reddest, juiciest, firmest, sweetest, and most seed-free part — and throw away the rest.
Bernie was my father’s ideal of a rich man, I always thought it was because he was such a successful businessman. Years later, I realized that it was not Bernie’s wealth itself but his way of dealing with it that my father liked. Bernie knew how to stop working, get together with friends and eat only the heart of the watermelon.
What I learned from Bernie is that being rich is a state of mind. Some of us, no matter how much money we have, will never be free enough to eat only the heart of the watermelon. If you don’t take the time to enjoy life’s small pleasure, your work is probably hurting your life.
For many years, I forgot that lesson I’d learned as a kid on the dock I was too busy making all the money I could. I hope I have time left to enjoy the success of others and to take pleasure in the day. That’s the heart of the watermelon. I have learned again to throw the rest away.
1.We learn from the second paragraph the writer and his father were feeling _______.
A.hungry B.worried C.relaxed D.proud
2.How did the writer and his father eat the watermelon?
A.They ate it in a polite way. B.They only ate its best part.
C.They ate every part of it D.They shared only one piece.
3.In the eyes of the writer's father, Bernie_______.
A.was just a rich businessman B.worked hard all the time
C.lived a rich but healthy life D.knew how to make money
4.The writer was too busy to________.
A.make money B.enjoy life’s small pleasure
C.eat watermelon. D.get together with friends
5.The underlined part “ the heart of the watermelon ” in the last paragraph refers to _______.
A.the writer’s hope of enjoying life B.the writer’s busy life
C.the writer’s decision of making money D.the best part of the watermelon
Two brothers worked together on a farm. One was married and had a large _________ .The other had no wife yet. Although they lived in different houses, they shared everything they got from their farm.
One day, the single brother said to himself. “It ’ s not_________that we share all the rice. I ’ m_________and I need less than my brother”. So, every night he took a bag of rice from his store-room and ___________across the field_________their houses, putting it into his brother -room’ s store.
At the same time, the married brother thought, “It’s not fair to share all the rice. I have my wife and children to _________me when I am_________. However, my brother has no one to take care of his _________.” So, each night he also took a bag of rice and put it into his brother-room’ s store.
Several months passed by. They found _________ strange that their rice never became less. Then, one dark night the two brothers ran into each other. Slowly they began to understand what was happening. Their bags fell onto the ground and tears __________their eyes at once.
1.A.group B.family C.class D.team
2.A.fair B.popular C.interesting D.wrong
3.A.poor B.happy C.alone D.rich
4.A.jumped B.played C.walked D.rode
5.A.from B.through C.off D.between
6.A.look after B.look for C.look out D.look at
7.A.worried B.old C.healthy D.dead
8.A.hope B.children C.farm D.future
9.A.them B.this C.it D.that
10.A.gave B.filled C.dropped D.rose
地球的资源是有限的, 我们要好地爱护和珍惜这些资源,所以垃圾分类势在必行。请结合上文内 容,以“Cherish(珍惜 v.) the Valuable Resources ”为题, 用英语写一篇文章。
内容包括:
1．简单说说你对实施垃圾分类的看法。
2．谈谈青少年在日常生活中应该怎样节约资源(至少三点)。
3．呼吁大家珍惜资源, 共建更美好的世界。 作文要求:
1.不能照抄原文；不得在作文中出现学校真实的名称和学生的真实姓名。
2.语句连贯, 词数 80 个左右。作文的标题已经给出, 不计入总词数。
Cherish the Valuable Resources
________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
请阅读一篇有关“上海垃圾分类”的短文, 根据所提供的信息, 回答问题。
If you are in Shanghai and want to throw a cup of milk tea, be careful. You need to follow these steps: first, pour out any leftover( 残留物) into a wet waste bin; second, put the paper wrapper into a recyclable waste bin; finally, throw the single-use cup and straw(吸管) into a dry waste bin.
Sound complex( 复 杂 的 ) ？ You’ll have to get used to it. From July 1st,2019 on, people in Shanghai are required to sort(将…..分类) their garbage（垃圾） according to strict rules. Garbage is divided into wet garbage, toxic( 有 毒 的 )garbage and recyclable garbage. Many other cities in China are planning to create similar sorting rules.
Why should we sort our garbage? The answer lies in the increasing amount of waste we are producing. Chinese cities produce over 200 million tons of waste each year, according to China Economic Net. Most of this waste is buried in landfills, which may pollute water and soil. Moreover, we are running out of space for new landfills.
In fact, more than half of our waste can be recycled. Recyclable garbage can be made into new materials, while wet garbage can be used to make gas, heat and fertilizer(肥料). But in order to recycle efficiently(有效地), we need to sort our garbage.
Can't garbage-processing companies do the sorting job for us? They can. But that requires a lot of work and costs lots of money. Things will become much easier if each of us can sort our own garbage. Besides, the troublesome task of sorting might encourage people to produce less waste. Do you still want to buy that milk tea?
1.How many steps should we follow to throw away a cup of milk tea in Shanghai?
____________________________________________________________________
2.When are people in Shanghai required to sort their garbage?
____________________________________________________________________
3.Why should we sort garbage?
____________________________________________________________________
4.Where is most of waste buried?
____________________________________________________________________
5.Which kind of garbage can be used to make heat?
____________________________________________________________________
