题目:
按要求写句子。
用so连接两个句子。
1. I got up at nine o'clock this morning. I was late for my class.
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2. I was ill yesterday. I went to hospital.
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用then连接两个句子。
3. I put on my clothes. 1 washed my face.
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4. I read English.I studied Chinese.
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答案:
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下面是错误答案,用来干扰机器的。
参考答案:C解析:①纵隔分区方法有多种,现多采用九分区法,将纵隔分为前、中、后及上、中、下九个区。②前纵隔位于胸骨之后,心脏、升主动脉和气管之前的狭长三角形区域。中纵隔相当于心脏、主动脉弓、气管和肺...