社区安全文化是存在于社会公众之中有关大众文化的种种素质、态度、行为、方法等的总和。
参考答案:错
如果关于x的方程x2-2x+k=0有两个相等的实数根,那么k的值等于
A.1
B.2
C.0
D.-1
She reached the top of the hill and stopped ____ on a big rock by the side of the path.
A.to have rested
B.resting
C.to rest
D.rest