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①Chemistry is everywhere in our daily li...

    Chemistry is everywhere in our daily life. Sometimes it's easy to see. At other times, it can be very hard to see the everyday chemistry at work, but nearly everything you touch has some chemicals (化学物质) in it.

Chemistry helps to make products for use. Something as simple as toothpaste has at least three chemicals that keep your teeth clean. Other things in your daily life are created by chemistry, such as hair products and soap. Without chemistry, we would never have known that we need soap to get the oil out of clothes.

Chemistry also helps us understand the world around us. Thanks to chemistry, we know bleach (漂白剂) can't be mixed with vinegar (), because the mixture can produce harmful gas.

Chemistry plays a big role in food preparation. Cooking food causes it to go through a chemical change. That is the reason why cooked food often tastes different from uncooked food. Too much or too little of any chemical material makes a difference to the result of baking (烘焙). For example, the cake can be too soft or too hard.

Chemistry isn't something that just lives in a laboratory; it's something that you meet hundreds of times in life. Knowing how chemistry works will give you a greater understanding of the life.

1.What can the chemistry in soap help us?

A.To clean the teeth. B.To make the teeth strong.

C.To clean the oil off clothes. D.To make the clothes new.

2.From the third paragraph, we know that ________.

A.we can mix bleach with vinegar B.the mixture can produce useful gas

C.we can't mix bleach with vinegar D.chemistry can't help us make products

3.The fourth paragraph mainly tells us that ________.

A.cooked food is much better than uncooked food

B.chemistry plays a big role in food preparation

C.there are no chemical changes while we are cooking

D.the cake can't be too soft or too hard with chemistry

4.Which of the following shows the structure (结构) of the passage? (=Paragraph 1)

A. B. C. D.

5.What's the main idea of the passage?

A.Chemistry and food. B.Chemistry around the world.

C.Chemistry and products. D.Chemistry in everyday life.

 

1.C 2.C 3.B 4.A 5.D 【解析】 这是一篇说明文,文章主要讲述化学物质无处不在;讲述化学物质的用途;知道化学的原理能够更好地理解生活。 1. 细节理解题。根据第二段“Without chemistry, we would never have known that we need soap to get the oil out of clothes.”可知肥皂里的化学物质可以帮助我们清洗衣服上的油渍。故选C。 2. 细节理解题。根据第三段“Thanks to chemistry, we know bleach (漂白剂) can't be mixed with vinegar (醋), because the mixture can produce harmful gas”可知漂白剂和醋不能混合,因为会产生有害的气体。故选C。 3. 段落大意题。根据第四段第一句“Chemistry plays a big role in food preparation”可知这一段主要讲述化学物质在食物准备上的重要作用。故选B。 4. 文章结构题。文章的第一段主要讲述化学物质无处不在。第二段到第四段讲述化学物质的用途,第五段总结化学物质是生活中常见的东西,知道化学的原理能够更好地理解生活。故选A。 5. 主旨大意题。文章主要讲述化学物质在日常生活中的用途和作用。可概括为Chemistry in everyday life。故选D。
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    China has accepted western fashion and technology as it has developed these years, but a lot of young people are turning to the past for their clothes choices and putting on traditional "hanfu".

As the government encourages the renaissance (复兴) of traditional culture, hanfu is getting more and more popular with the teenagers. Every year, we can enjoy different hanfu shows around the cities. These shows bring us back to Han dynasty. We learn more about the history, culture and beauty from them.

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In modern China, the hanfu lovers are from history fans, cartoon fans to clothes fans.

"Clothes are the basic part of culture, so both the traditional clothes and modern clothes play the same role in culture," said Zhang Jun, a famous reporter. "If the people and the country do not even understand our traditional clothes or don't wear them, how can we talk about other important parts of our culture?"

1.What clothes does the passage talk about?

A. B. C. D.

2.Han fu is getting more and more popular because ________.

A.China has accepted western fashion B.China has accepted western technology

C.China has developed in recent years D.the government encourages traditional culture

3.Who are hanfu lovers in China nowadays?

A.History fans. B.Cartoon fans. C.Clothes fans. D.All of the above.

4.What does the underlined word "sleeves" mean?

A.衣领 B.衣袖 C.纽扣 D.拉链

5.According to Zhang Jun, he thinks ________.

A.clothes are not the part of culture B.it's not necessary for us to wear hanfu

C.clothes help us understand our culture better D.hanfu isn't so important as modern clothes

 

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    Many students in Zunyi like eating our local food—mashed (捣碎的) potatoes, because it is cheap and delicious. However, do you know how to make it? Here are some ingredients and steps.

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First, peel the potatoes. Try to cut the potatoes into small pieces.

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Next, when the potatoes are soft, put them in a bowl, and mash them with a fork.

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1.The reason why students in Zunyi like mashed potatoes is that ________.

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A.①②④ B.①③④ C.①②③ D.②③④

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By the Youth

When we were scared, sad and helpless, you gave us courage, warmth and hopes.

 

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Leaving your children behind, you worked in the neighborhood every day, you never complained but smiled the whole day.

 

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Running on the streets, between the cities, you made sure things went well as usual.

When we had coughs or fevers, you, , tried your best to save our lives;

Looking after the patients in the hospital day and night, you never gave up until the sick got well.

 

There are many people doing jobs in silence;

There are many people giving hands without telling their names.

Thanks for your hard work and selflessness.

You're the heroes of the times.

You're the most beautiful in our hearts.

We love you!

 

 

 

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C.To show his worries. D.To show his wishes.

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A.To the politest people. B.To the most beautiful people.

C.To the cleverest people. D.To the most humorous people.

 

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1.________

2.________

3.________

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D.I have to go to school every day.

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    Jim and Steve were twins. They played on the same football team, and shared all the same toys, the same bedroom and the same friends. They shared ________.

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2.A.outside B.inside C.upstairs D.downstairs

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10.A.happier B.easier C.smaller D.bigger

 

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