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问题
单项选择题
剥脱性龈病损应考虑（）。
A.天疱疮
B.类天疱疮
C.扁平苔藓
D.红斑狼疮
E.以上全应考虑
答案
参考答案：
E
补全对话，情景问答
Read and match.（读句子，选出相应的答语）
( )1. What are the ducks doing?
( )2. What is it doing?
( )3. Do you see any elephants?
( )4. What about the mother kangaroo?
( )5. What about your dad?
A. It's eating bananas.
B. They're swimming.
C. She is jumping.
D. He's sleeping.
E. Yes, I do.
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问答题 简答题
振打电机跳闸的原因及处理
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