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We’re surrounded by chemistry in everyday life. Sometimes it is easy to see, like when your science teacher does a big experiment in class. At other times, it can be pretty hard to see everyday chemistry at work, but nearly everything you touch or use has some element of chemistry in it.
Something as simple as toothpaste contains at least three chemicals, if not more. It is the mixture of them and its chemical reaction that keeps your teeth clean. Other things you use every day are created by chemistry, such as hair products, shampoo and soap. Adding detergent (洗滌劑) to water involves chemistry. Without chemistry, we would never have known that we need soap to get the oil out of clothes or skin. Chemistry not only helps us make products for use, but it also helps us understand the world around us. Chemistry helps us understand what the ozone layer (臭氧層) is and how it protects us. Chemistry also gives us sunscreen to protect us from the sun. Thanks to chemistry, we know bleach (漂白劑) can’t be mixed with vinegar(醋), because it can produce poisonous gas.Without chemistry, we wouldn’t have fireworks displays on important days.
Chemistry plays a big role in food preparation. Cooking food causes it to go through a chemical change. That is why cooked food often tastes different from raw food. Baking is a great example of chemistry. Too much or too little of any ingredient（成分，尤指烹飪） makes a difference to the result of baking, for example, the dough (面團) won’t rise or the cake will be flat.
Chemistry isn’t something that just lives in a lab; it’s something that you meet hundreds of times every day. Knowing how chemistry works will give you a greater understanding of the science behind some of the simplest-looking things.
小題1:What’s the main idea of Paragraph 1?
A．Chemistry is easy to see around us.
B．Sometimes chemistry is hard to see around us.
C．How a science teacher does a big experiment.
D．Few things in everyday life contain chemistry.
小題2:The following actions are about chemistry EXCEPT _____.
A．cleaning teeth with toothpaste
B．washing hair with hair products
C．using soap to get the oil out of clothes
D．washing your face with water
小題3:The underlined word “poisonous” in Paragraph 3 means _____.
A．harmful B．healthy C．fresh D．pleasant
小題4:Which one is TRUE according to Paragraph 4?
A．One can’t find chemistry when cooking food.
B．Chemistry plays an important part in food mak-ing.
C．That dough rises is nothing to do with chemistry.
D．A flat cake is the result of too many ingredients.
小題5:Which of the following would be the best title for the text?
A．Chemistry Around the House
B．Chemistry in Science
C．Chemistry for Dinner
D．Chemistry in everyday life

小題1:B
小題2:D
小題3:A
小題4:B
小題5:D

試題分析：本文敘述了在人們的日常生活中化學無時不在無處不在，文中舉了一些例子，了解化學能夠幫助我們理解我們的生活中的一些自然現象。我們的生活離不開化學。
小題1:這是概括大意題。根據At other times, it can be pretty hard to see everyday chemistry at work,這是本段的中心句，故選B。
小題2:這是細節(jié)理解題。根據Something as simple as toothpaste contains at least three chemicals 和Other things you use every day are created by chemistry, such as hair products, shampoo and soap.水里沒有化學物質，故選D。
小題3:這是詞義猜測題。根據Thanks to chemistry, we know bleach (漂白劑) can’t be mixed with vinegar(醋), because it can produce poisonous gas 兩者不能想混說明混合在一起會發(fā)生反應而產生對身體不利的東西，故選A。
小題4:這是細節(jié)理解題。根據Chemistry plays a big role in food preparation 故選B。
小題5:這是標題歸納題。根據We’re surrounded by chemistry in everyday life.從短文的首句及整篇短文來看，本文敘述的是日常生活中的化學，故選D。
點評：概括大意這種題型的實質是讓考生給每段文字“命”一個小標題。而要“命”出這個標題來就必須確定每段文字的主題思想。如何確定文章和主題思想？考慮一下人們的寫作和邏輯思維過程，這個問題就容易回答了。
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B．make new friends
C．1isten to my parents’ story
D．taste nice dishes
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Dear editor,
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Yours,
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B．Mary left before the party was over.
C．Lily’s cellphone was broken.
D．Lily had a quarrel with Mary.
小題4:What kind of person is Mary?
A．Friendly and beautiful.
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“That night he wrote a seven-page paper describing his goal of owning a horse ranch someday. He put all his heart into the project and wrote about his dream in great detail. He even drew a diagram of a 200-acre ranch, showing the location of the buildings, stables and the track, and even a detailed floor plan for a 4000-square-foot house on it.”
“The next day he handed it in to his teacher. Two days later ,he received a large red “F” on his paper with a note, ‘See me after class.’ The boy went to see the teacher and asked why. The teacher told him there was no way for a young boy like him to do that because owning a horse ranch required much money and resources, and then added ‘If you’ll rewrite his paper with a more realistic goal, I will reconsider your grade.’”
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“Finally, a week later, the boy turned in the same paper without any change and stated, ‘You can keep the F and I’ll keep my dream.’”
“I tell you this story because you are sitting in my 4000-square-foot house in the middle of my 200-acre horse ranch. I still have that school paper framed over the fireplace.”
Don’t let anyone steal your dreams. Follow your heart, no matter what.
小題1: The teacher gave him an “F” for his written paper because the
teacher thought 　　    .
A．he didn’t do a good job in his studies
B．he described an unrealistic goal in his paper
C．he came from an itinerant horse trainer’s family
D．he wrote his paper without the help of his father
小題2: Why did the boy turn in the same paper without any change?
A．Because he made up his mind to stick to his dream.
B．Because his father stopped him from rewriting it.
C．Because he was angry about his teacher’s words.
D．Because he had put too much of his heart into it.
小題3: From the story we can infer that the boy was actually 　　    .
A．Monty himselfB．the author himself
C．Monty’s friendD．an unknown person
小題4: According to the passage, the following statements are true EXCEPT
that 　　    .
A．the boy was very interested in having a horse ranch of his own
B．the boy might have got a higher grade if he’d rewritten his paper
C．the boy succeeded in turning his dream into reality in the end
D．the boy wouldn’t have reached his goal without his father’s support
小題5: The author wrote this passage mainly to 　　    
A．tell people how to describe their goals
B．warn people against dream stealers
C．encourage people to stick to their dreams
D．teach people how to write their papers

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