His work really ________ in the factory.

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• 1Food safety is important.Rules________ to protect people from food pollution.

  A. must make    B. must be made

  C. can't    D. can't be made

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• 2—Who is the little girl in the picture? —It's me. The picture __________10 years ago.

  A. took    B. is taken    C. has taken    D. was taken

  
  

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• 3According to our plan, a new teaching building ________.

  A. will build    B. will be built

  C. is built    D. builds

   

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• 4—Could I have a look at your pictures? —Yes, of course you________.

  A. could    B. can

  C. will    D. might

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• 5Miss Lin____________ a lot of work for the poor area since 2010.

  A. does    B. did    C. has done    D. will do

  
  

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• 6王洋是上海某社区垃圾分类监督员，下文是他对社区内外国留学生进行垃圾分类（garbage sorting)集中指导。根据下

                            Organizing your household garbage

  

  Dear foreign friends, glad to meet you here. Today I'd like to introduce new garbage sorting rules to you. In Shanghai, we are supposed to 1. the garbage into four groups, namely recyclable, harmful, dry and wet waste.  Paper, plastic, glass, and fabrics is 2. waste while food leftovers, plants, expired food is wet waste. Batteries, light tubes and 3. should be considered to be harmful waste. All other non-recyclable solid waste is called dry waste. We all believe that garbage sorting is 4. for the protection of the environment. Right? If people fail to sort their garbage, they will be fined up to 200 yuan. If all of us take pains to sort garbage, we'll lead a better life. So, let’s start right now.

  Give the foreign students a piece of advice about garbage sorting.

  5.

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• 7现有10gA和足量的B混合加热，A与B发生化学反应，10gA完全反应后生成8gC和4gD，则参加反应的A与B的质量比是（ ）

  A．5：1     B．4：1     C．2：1     D．1：1

  
  

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• 8实验室用一定质量分数的过氧化氢溶液50g和2g二氧化锰混合反应，完全反应后称得剩余物的质量为48.8g，则溶液中过

  A．2.4%     B．3.2%     C．13.6%     D．6.8%

  
  

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• 9运用下列方法或试剂区分各组物质，难以达到目的是（ ）

  A．带火星的木条﹣﹣空气和氧气

  B．观察颜色﹣﹣酒精和水

  C．澄清石灰水﹣﹣二氧化碳和氮气

  D．肥皂水﹣﹣软水和硬水

  
  

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• 10对石蜡在盛有氧气的集气瓶中燃烧，比在空气中燃烧更旺的原因分析错误的是（ ）

  A．集气瓶中单位体积内氧分子个数多

  B．集气瓶中石蜡与氧分子碰撞机会较多

  C．空气中氧气浓度不如集气瓶内氧气浓度大

  D．石蜡在空气中散发热量速度较快

   

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