若三角形的三边长分别为x﹣1,x,x+1,则x的取值范围是( )
x>2
—You saw the film Titanic last night, didn't you?
—Yes, _______ I missed the beginning.[ ]
A. and
B. or
C. so
D. but
下列各表达式中是函数的化简式的是()。
A.1
B.AB+CD
C.
D.A+C