问题
选择题
Let's go to the Green Park ____________. [ ]
A. this Saturday
B. on this Saturday
C. in this Saturday
答案
答案：A
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Let's go to the Green Park ____________. [ ]
A. this Saturday
B. on this Saturday
C. in this Saturday
答案：A
冠周脓肿继发左侧咬肌间隙脓肿，切开引流时发现引流物为翠绿色稍粘稠的脓液，有酸臭味。可能为哪种细菌感染所致（）。