A-A+
A．Because of the development of industry.B．Bec
问题详情
A．Because of the development of industry.
B．Because of the pasteurization process.
C．Because of the new discoveries.
D．Because of the increasing number of cattle.
参考答案
正确答案：C
解析：短文提到，由于几项新发明(new inventions)使乳品加工业成为巨大产业。虽然选项中没有in-ventions但下文提到的these discoveries与其意思是一样的，故C为正确答案。
