Which of the following is NOT accurate about the Spaniards injured in the blasts a. None of them were seriously wounded. b. They were buried by the debris after the explosion. c. They didn’t want their names or ages released. d. They stayed at the same hotel.

不可做为干燥剂的物质是（）。

A.变色硅酸；

B.粒状无水氯化钙；

C.氯化钠；

D.浓硫酸。