—I'll go and climb the Western Hills this weekend. Would you like to go with me? 

—_____. Please call me when you go. [ ]

A. No, I won't

B. I won't go

C. Sorry, I'm busy

D. Yes, I'd love to

碳酸盐水垢大多为（）

A.白色和微黄色

B.粉红色

C.黑色

D.兰色