问题
选择题
Usually I go to school on foot, _____________ my home is near. [ ]
A. because
B. but
C. if
答案
答案：A
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Usually I go to school on foot, _____________ my home is near. [ ]
A. because
B. but
C. if
答案：A
为过小畸形牙，牙体制备后拟完成金属-烤瓷全冠修复体，制取印膜时选用的最佳印膜材料是（）