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【简答题】
听材料，回答问题。 1. What was Bob's trouble? A. He couldn't get up. B. He couldn't sleep well. C. He couldn't go to work. 2. Did Bob sleep on Sunday night? A. Yes, he did. B. No, he didn't. C. Sorry, we don't know. 3. How was the boss feeling when he saw Bob? A. He was happy. B. He was tired. C. He was angry. 4. How long did Bob sleep after he took the sleeping pills? A. About one day. B. More than two days. C. More than three days.
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皮皮学刷刷变学霸
举一反三
【简答题】Translation :我对他的第一印象是他是一个优雅的人。
【简答题】正常齿制标准渐开线齿轮，当用齿条刀具加工时，其最少齿数为 ，不会发生根切现象。
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