题目内容
铝合金窗产品系列名称是以门、窗框的（）构造尺寸来区分的
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门的主要作用是()。
门可分为（）、转门等几种类别。
窗的主要作用是（）
Directions: In this section, you will hear two long conversations. At the end of each conversation, you will hear four questions. Both the conversation and the questions will be spoken only once. After you hear a question, you must choose the best answer from the four choices marked A）, B）, C）and D）. Then mark the corresponding letter on Answer Sheet 1 with a single line through the centre.Long conversation 1[音频]Question 1
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