题目内容
Questions 11 to 13 are based on the following passage. At the end of the passage, you will be given 15 seconds to answer the questions. Now listen to the passage. The teachers mainly teach ______ in universities.
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Questions 18 to 20 are based on the following passage. At the end of the passage, you will be given 15 seconds to answer the questions. Now listen to the passage. What is the average age of a game player
( )利用前药修饰原理，消除不适宜的制剂性质。
Questions 18 to 20 are based on the following passage. At the end of the passage, you will be given 15 seconds to answer the questions. Now listen to the passage.
结构中含有五个手性碳原子的为( )。
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