— When are the Shutes leaving for New York
—Pardon
—I asked（）.

A. when are the Shutes leaving for New York

B. when the Shutes are leaving for New York

C. when were the Shutes leaving for New York

D. when the Shutes were leaving for New York

在制碱塔内，突然出现大量晶核的一点称为（）。

A、自发析出点

B、初冷点

C、临界点

D、晶核生长点