试管凝集法检测军团菌时，凝集结果的判定，"-"现象为（）

A.上清液完全透明，菌体于管底呈伞状沉淀

B.上清液几乎完全透明，管底有伞状沉淀

C.上清液稍透明，管底有伞状沉淀

D.液体有勉强透明度，管底有稍微沉淀

E.液体均匀浑浊，管底无沉淀

—The dish is delicious!

—Well, at least it's _____ the one I cooked yesterday. [ ]

A. as good as

B. worse than

C. as well as

D. as bad as