拆除不良修复体后应先做 查看材料
A. 左上3根管治疗
B. 洁治
C. 左上1拔除
D. 左上3拔除
E. 左上1根管治疗
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A. The ancient background of the stories.
B. Her improper writing of race and gender.
C. The overemphasis of adventure and magic.
D. The old and unfashionable language.
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A. Universities.
B. Cities.
C. States.
D. Federal government.
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A. Its subjects are too simple to use the formula.
B. The formula is good for this kind of writing.
C. Its subjects require deep thoughts and investigation.
D. Careful thinking should be throughout the process of writing.
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