用药物覆盖牙髓暴露处,以保护牙髓、保存牙髓活力的方法称为()。
A.直接盖髓术
B.间接盖髓术
C.根尖屏障术
D.根尖诱导成形术
E.牙髓切断术
参考答案:A
I am one of the students who _________ English well in my class but he is the only one of us __________ maths well.
A.studies; learns
B.study; learns
C.study; learn
D.studies; learn
脂酸合成的中间产物
A.丙酰CoAB.丙酮C.丙酮酸D.丙二酰CoAE.丙二酸