已知函数f(x)=lnx+x-3的零点x0∈[a,b],且b-a=1,a,b∈N*,则a+b=[ ]
A.5
B.4
C.3
D.2
答案:A
—________the film?
—Oh, that's a real thriller.[ ]
A. How about seeing
B. What about seeing
C. How do you like
D. Both A and B
与复合树脂在使用过程中受到的磨耗无关的是()
A.牙刷牙膏磨耗
B.对颌磨耗
C.食物磨耗
D.树脂与填料之间的磨耗
E.复合磨耗