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常用病毒培养方法有（）。
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说明经营上的专业化与多元化战略各自的利弊。
The sun was shining quite brightly as Mrs Grant left her house, so she decided not to (16) an umbrella with her. She got on the bus to the town and before long it began to rain. The rain had not stopped (17) the bus arrived at the market half an hour later. Mrs Grant stood up and absent-mind-edly(心不在焉地)picked up the umbrella that was (18) on the seat in front of her.A cold voice said loudly, That is mine, Madam!Suddenly remembering that she had come out without her umbrella, Mrs Grant felt (19) for what she had done, trying at the same time to take no notice of the unpleasant (20) the owner of the umbrella was giving her.When she got off the bus, Mrs Grant made straight for a shop where she could buy an umbrella. She found a pretty one and bought it. Then she (21) to buy another as a present for her daughter. Afterwards she did the rest of her (22) and had lunch in a restaurant.In the afternoon she got on the homeward (回家的)bus with the two umbrellas under her arm, and sat down. Then she (23) that, by a curious coincidence (巧合), she was sitting next to the woman who had made her feel (24) that morning.That woman now looked at her, and then at the umbrellas. "You’ ve had quite a good (25) , " she said. （17）处填入（）
某企业向社会招聘一名销售主管，梁先生前往应聘，双方协商洽谈中，梁先生向企业提交了以往在多个企业担任过销售主管的书面材料。企业对梁先生的工作经历相当满意，于是双方协商签订了劳动合同。合同规定：企业聘用梁先生为销售主管，试用期3个月；梁先生全权负责企业销售业务，并对销售部人员的聘用享有决定权。劳动合同签订后，企业要求梁先生上班工作。 两个月后，该企业经过调查发现，梁先生所说的在多个企业担任过销售主管纯属虚构。为了避免梁先生继续工作可能产生的问题，企业当即做出了与梁先生解除劳动合同的决定。双方因此发生劳动争议。 请结合本案例，对本案的焦点、企业做出决定的合法性以及争议处理作出分析说明。（18分）
CLearning How to Learn $ 22Children who read this book show great interest in study. Many pictures will help them understand it easily and quickly.The Basic Study Guidebook $ 36Read this book and learn:What the three barriers (障碍) to study are and what to do about themWhat to do if you are tired of a subjectChildren read it to improve the ability to study.How to Use a Dictionary Picture Book for Children $ 35Read this book and learn:How to look up words in a dictionaryWhat the different marks in a dictionary meanHow to use a dictionary to pronounce words correctlyBuy this book and help children unlock their education. What’s more, you’ll just pay 60% for it before May 10, 2009. The purpose of the three ads is to（）.
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