对AS诊断最有意义的是（）
A．HLAB27阳性
B．腰背痛
C．“4”字征阳性
D．对称骶髂关节炎Ⅱ级以上
E．血沉增高
参考答案：D
(2013·高考江苏卷)—The Tshirt I received is not the same as is shown online.
—________？But I promise you we’ll look into it right away.
A．Who says
B．How come
C．What for
D．Why worry
如何正确理解GDP？
