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Task 5 Listen to the passage twice and fill in the blanks with what you hear.Time is equal to everyone. Whether you are smart or foolish, ugly or beautiful, you have the same 24 hours each day that everyone else has. How you spend that valuable time determines the . Time is more precious than any possession.There are three rules for effective time management. Firstly, don’t create . Don’t try to work full time and take a full load. Be reasonable about how much work you can do.Secondly, make a list of all thethings that you need to get done in a given time period. Put the tasks in orderof and delete ________________ any unimportant items.Thirdly, avoid lack of focus. Use liststo . Tobe more attentive, set boundaries with family and friends when you are at work,as personal phone calls and emails can easily disturb your workday progress. Ina modern , youcan use technology to help. For unimportant communications, provide clientswith a fax number or email address. This should cut down on the number ofunimportant phone calls you receive throughout the day.
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U103Directions: Complete the following passage with words chosen from this unit. The initial letter of each is given.My mother and I always enjoyed our chat together under a pine tree in the park. At our 1) r__________ meeting, however, her pale face took me by 2) s____________, I asked her what was wrong, and her 3) s____________ look and silence made me believe that she was keeping something from me. Apparently, something serious was 4) d______________ her. At first, he remained silent. Finally, after my persistent 5) i_____________, she could not hold it any longer and 6) a____________ to me that she had a very serious heart disease. It suddently 7) o____________ to me that 3 years ago, she had heart 8) s____________ but her condition did not improve afterwards and now there were hardly any options left. I reached over and wrapped my arms tightly around my mother and cried. As we sat there that cool April afternoon soaking up the sun and smelling the fresh 9) _____________ of the grass, I had one wish in my heart that I could have more 10) g____________ with my mother in the days to come.
烟尘烟气测试仪是用来采集（ ）中的气态和颗粒态污染物。
气袋常用的材质有聚四氟乙烯、聚乙烯、聚氯乙烯和金属衬里气袋等，它适用于采集化学性质稳定、不与气袋起化学反应的低沸点气态污染物。采样前气袋应清洗干净，无残留气体干扰、不漏气。采样时用现场空气清洗气袋（ ）次后再正式采样，采样后迅速将进气口密封。
富集采样法适用于气体中被测物质浓度很低，或所用方法的灵敏度不高的情况，它包括 （ ）
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