— Mr. Smith, would you have some more ice-cream?

— No, thanks. It's very good, but I have to _____ my weight, you know. [ ]

A. watch

B. remain

C. pull

D. gain

下列检查，哪项与链球菌感染证据不相关（）

A.红细胞沉降率

B.ASO测定

C.抗透明质酸酶

D.抗脱氧核糖核酸酶

E.抗双磷酸吡啶核苷酸酶