问题
单项选择题
Products which are made from dirts and are ______ high temperatures are known as ceramics.
A．tempered in
B．subjected to
C．exposed to
D．baked in
答案
参考答案：B
解析：[分析] 近义辨析。 temper使金属回火后有适当韧度；be subjected to易遭受，使经历；expose to使暴露在……下；bake烘焙，烤，在此意为：由泥土制成并经受高温后形成的产品被称为陶器。