I will be surprised if you can get Calvin, who is a close-fisted man, ____these donation draw tickets

from you. [ ]

A. buy

B. buying

C. buys

D. to buy

(5分)已知A是灰黑色硬而脆的固体，B是气态物质，根据下图所示关系确定各字母所代表的物质的名称：

A________，B________，C________，D________，E________。