The children often play soccer in the garden and sometimes break Mr Black's windows. One afternoon Mr Black is at home and reads a book. In a minute he closes his eyes and goes to sleep. At that time a little boy knocks at the door. Mr Black opens his door and asks, “Do you break my window again?”
“Oh, no,” says the boy, “Your window is open this time and our soccer ball is in your room. May I get it, please?”

    Mr and Mrs Smith have two sons and two daughters. They're Tom,Jack,Sally and Mary. They're quadruplets(四胞胎), so their birthday is on the same day—July 22nd.

    It's their fourteenth birthday today. Their parents buy some things for them:four cakes, two T-shirts and two skirts. The four cakes are the same, and one cake is 15 dollars. The two T-shirts are the same,too. They are yellow and 35 dollars for one. The price of the two skirts is the same and one skirt is 60 dollars. But their colors are not the same. Sally likes blue and Mary likes green, so the blue skirt is for Sally and the green one is for Mary.

    With air pollution making much difference to many of Chinese cities, parents are calling for the installation(安装) of air cleaners in classrooms. There has been much debate over whether air cleaners should be used in China's schools. Some parents have donated cleaners to their children's classrooms, while others raise money together to make the purchase(购买). “Our school bought air cleaners last year. We did a little fund raising, with each parent throwing in several hundred for that,” said one parent.

    However, the idea of installing air cleaners for all the classes has been refused by some schools. Liu Liangcheng, vice-principal of Beijing's Taipinglu Primary School, says installing air cleaners bought by parents may lead to problems. “We have refused air cleaners bought by parents before, as there are clear and strict rules against educational fees. We can't just break the rules here. And without standard guidance (指示) from local authorities(权威部门), it is hard to decide on the brand of the cleaner, installation and even safety of the device(设备).”

    Moreover, experts say air cleaners can cause other health problems. Deng Gaofeng who works for the China Academy of Building Research says. “ In the classroom, if we keep windows and doors closed, the concentrations (浓度) of CO₂ will double from 1,000 PPM to some 2,000 PPM. According to national safety standards, the highest level should not be more than 1,500.” In addition, experts say air cleaners on the market are mostly designed for homes or offices. Evaluation(评估) is needed to know whether they are suitable in classrooms.

    It seems whether air cleaners should enter China's schools is an ongoing question. It still requires a more detailed plan.

阅读以上信息，用恰当的单词完成下面的表格，每空一词。

Topic : Should air cleaners be installed for students in school?

⑴{#blank#}1{#/blank#}The WWF is working hard to save pandas—the symbol of animals in danger.

⑵{#blank#}2{#/blank#}A journey by train is more relaxing than by bus, but it costs more money.

⑶{#blank#}3{#/blank#}It was a small village 30 years ago, but now it has more tall buildings.

⑷{#blank#}4{#/blank#}You need to listen for key words and main ideas, just the same as reading.

⑸{#blank#}5{#/blank#}The match was difficult and no one could score at all. It was really boring.

    Mr. Reynolds, my teacher, handed us a list of thoughts, and asked us to write a paper on one of those thoughts. I chose the topic" I wonder why things are the way they are."

    I wrote down all the questions that puzzled(困扰)me about life. I realized that many of them were hard to answer，and perhaps others could not be answered at all. When I handed in my paper，I was afraid that I might fail because I did not answer the questions.

    The next day, Mr. Reynolds handed me the paper and asked me to read it for the class. The other students became quiet as I began to read my story：

    Mum, why are the roses red? Why is the grass green and the sky blue? Why do I have to graduate(毕业)？Why do I have to grow up? Why do I have to be called "Grandma" one day？

    Dad, why can't I stay out until 12: 00? Why do I miss my old friends? Why do I miss being at home? Why do you love me so much？

Mum, Dad, why did you have to leave me? I need you.

    At the end of my story, I looked at Mr. Reynolds, and I saw a tear slowly coming down his face. Then I realized that life is not built on the answers we receive, but on the questions we ask.