题目内容
Listen and Complete the sentences. Ashley wants to study1.Her dad wants her to study 2.Ashley says there is3 she can do with an art degree.Ashley thinks the business world is 4 for her.
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Listen again. Circle D for Dreamer, P for Partner, T for Thinker, or A for Artist for each sentence. Sometimes, more than one answer is possible. 1 This person wants to be in a group.2 These people are often hardworking and organized.3 These people like to be free.4 These people are competitive.5 These people often work as teachers.6 These people often work as politicians.7 Lance Armstrong is an example of the personality type.8 Harry Potter is an example of this personality type.
Listen to a conversation between two interviewers. What are they talking about? Circle the answer.
对乙醇一水系统，用普通精馏方法进行分离，只要塔板数足够，可以得到纯度为0.98(摩尔分数）以上的纯酒精。
精馏的操作线为直线，主要是因为（ )
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