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?

    Memory(记忆) is very important. It helps you remember who you are, where you live, what you have learnt and what you plan to do in the future.{#blank#}1{#/blank#} 

    Memory has close relationship with the brain(大脑).{#blank#}2{#/blank#} For example, you can do new things. If you walk a different way to school or take a different bus. You will keep your brain active. You can try to remember something new. You can try to learn new skills.{#blank#}3{#/blank#} Your brain gets lost of regular exercise if you do any of these things.

    If you live a healthy life, your memory will work better. You must have a balanced diet(均衡饮食)not just fast food.{#blank#}4{#/blank#} Unless(如果不)you get enough sleep every night, you will not remember things well.

    {#blank#}5{#/blank#} If you get too worried, your brain will slow down, and your memory will become less sharp. So, to improve your memory, you should exercise your brain, live a healthy life and stay relaxed.

阅读下面方框中的五个选项（ABCDE），从中选出可以填入空白处的最佳选项，并将其标号填在相应的横线上。

    Like many countries, Britain has serious environmental problems. In 1952, more than 4, 000 people died in London because of the smog(雾霾). The government made new laws to stop smog from coal(煤) fires and factories and things became better.

    Today, London is much cleaner but there is a new problem：smog from cars. In December 1991, there was very little wind in London and pollution was much worse. As a result, about 160 people died from pollution in just four days.

    Part of the problem is the new "out of town" shopping centers. In the past, people often walked to shops near their home or went by bus. Now, many people drive to the new shopping centers. As a result, the small shops have been closed and more people have to travel to do their shopping.

    Many people think that Britain needs better and cheaper public transport(交通). Transport in Britain is very expensive. An early morning train trip from Glasgow to London(about 600km)can cost about 100 pounds, for example. A short 15-minute bus trip can cost over 100 pound.

    Many people are trying to cut the use of cars in Britain. Some cities now have special bicycle paths and many people cycle to work. Some people also travel to work together in one car to make less the pollution and the cost.

⑴{#blank#}1{#/blank#} People might grow plants and vegetables in the sea in about 50 years.

⑵{#blank#}2{#/blank#} The Lost World is an exciting American movie. People, especially school students, may like it better in free time.

⑶{#blank#}3{#/blank#} Though you could buy the world, you could not buy a happy family, good friends or knowledge (知识).

⑷{#blank#}4{#/blank#} For parents with children, an important problem is getting the children away from the television to do their homework.

⑸{#blank#}5{#/blank#} When you need help for your homework, go to the library. You may find magazines, newspapers and big dictionaries there. They can always help you.