胸壁结核性病灶清除术的手术适应症包括()
A.一经确诊,尽早手术
B.病变范围较大
C.药物治疗疗效不明显
D.病变已成窦道
E.反复继发感染
参考答案:B, C, D, E
牙周洁刮治后需全身使用抗生素预防感染的情况是,糖尿病患者的糖化血红蛋白实验(HbA1c)结果超过()
A.7%
B.8%
C.9%
D.10%
E.11%
6.They planted some young trees in the garden _______ it was the best time for them.
A.where
B.that
C.until
D.when