（以下5题共用备选答案）
慢性炎症伴有大量浆细胞侵润
A．肉芽组织B．纤维组织C．纤维蛋白D．淀粉样物E．变性坏死的中性白细胞
参考答案：H
He brushed his teeth quickly and _____ breakfast.[ ]
A. has
B. have
C. had
D. having
配制污水处理药剂时，待药剂溶解完后，要继续搅拦（），方可投入药剂罐。
A.20min
B.30min
C.40min
D.50min
