—I'm sorry, I broke your pen. Let me buy you a new one.

—______ I have another one. [ ]

A. You're always so careless.

B. Thank you.

C. Never mind.

D. That's right.

下表示细胞信息传递的三种类型。请分析回答下列问题。

激素甲受（）和（）激素分子的调控，人在寒冷环境中，激素甲分泌增加时，细胞反应①表现为（）。