单选题
Why could not ceramics be used widely in the past?
A、
Because of their brittleness.
B、
Because people didn't know how to use them.
C、
Because they were not useful.
D、
Because they could not resist heat.
【正确答案】
A
【答案解析】
[解析]由短文第二段中的“Ceramics，for instance，have long been limited by their brittleness．”可知答案为A。故应选A。
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