预警制度,是通过治安信息的收集和分析,不断提高对治安危害的预见性,加强超前控制。 ( )
参考答案:对
现有两块可以重叠的三角板,在相等长的两边重合时,能拼出多少种不同的三角形?画图说明.
Certain actions, especially _____ the hands and feet, can cause offense in many countries because of the various cultures.
A.in
B.by
C.on
D.with