正常新鲜牛乳的干物质含量是（）
A.2%～3%
B.11%～13%
C.30%～35%
D.87%～89%
参考答案：B
-I hope we'll win the gold medal in the 2012 Olympic Games.
-__________. I think you're the best.[ ]
A. No, you can't
B. I bet you will
C. Congratulations
D. Thanks
有如下程序： Private Sub Commandl_Cick() a=10:b=50 Rem Print a;b Print bla Print a；b End Sub 运行后，单击命令按钮后的输出结果是 ( )
A．10 50 50 10 10 50
B．10 50
C．10 50 50 10
D．50 10
