了解人群口腔卫生习惯可通过
A．口腔健康咨询B．捷径调查C．问卷调查D．制定口腔保健计划E．口腔预防保健措施
参考答案：C
I met Lucy yesterday. But she gave me a cold shoulder.
A．she was unhappy
B．she was unfriendly to me
C．she was friendly to me
D．she had a cold
（）是古罗马政治学者波利比阿的作品。
A.《罗马史》
B.《政治学》
C.《理想国》
D.《神曲》
