下列变量定义语句正确的是（）。

A、int a,b=0;

B、float r,area;

C、double s=1.0;

D、char ch="m";

A、Dim 123a As Integer

B、Dom b As Double

C、Dim c1 As Singlen

D、Dim a_1,b_2 As String

A、#define x 10

B、const x 10;

C、const int x = 10;

D、const int x;

A、int x; int rx = x;

B、int x, &rx = x;

C、int x, rx = &x;

D、int &rx = x, x;

A.A

B.B

C.C

D.D

B．int *p=x;

C．int *p=&x;

D．*p=*x;

B.c=＂66＂

C.c=66；

D.c=＂B＂

A、int s;

B、int *p,*q;

C、int *p,q;

D、int p,*q;

A、c="98"

B、c=98

C、c='98'

D、c="b"