对于实数a、b定义某种运算:a*b=a(a>b),且a*b=b*a,若(2x+1)*(x+3)=x+3,则x取值范围( )
x<2
--- Excuse me, is there ____ book by Mo Yan?
---Yes, it’s on _____ bookshelf over there.
A.a; a
B.an; an
C.a; the
D.an; a
岳阳楼的双公祠中有一幅对联:“双公双绩双德,联珠壁,会风云,昭日月,文坛佳话播九州。”请问这里的“双公”是指哪两位名人?