A.Cos 35 B.Cos(35) C.Cos(35º) D.Cos(35*3.14159/180)
A.1<X<5 B.X=2 or X=3 or X=4 C.1<X And X<5 D.Not (X<=1) And Not (X>=5)
A.a<=1或a>=5 B.a<=1,a>=5 C.a<=1 or a>=5 D.a<=1 And a>=5