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问题
填空题
实践操作类教学方法包括（）、练习法、实习作业法。
答案
参考答案：实验法
选择题
I _____ along the street looking for a place to park when the accident _____.
A. went; was occurring
B. went; occurred
C. was going; occurred
D. was going; had occurred
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问答题
用化学方程式表示以石灰石、纯碱、水为原料来制取烧碱的过程．
______
______
______
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