用括号里单词的适当形式填空。

1. —What’s the weather like today?

    —It's        (rain).

2. I walk       (slow) than he.

3. There is a lot of         . It's a       area. (sand)

4. The street is always     _  (crowd), isn't it?

5. If you can't speak English , you can       (simple) speak Chinese in Singapore.

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