(2015•广东佛山)________ I live in a safe community, I still feel a little worried when I go out at night.
A:Although
B:Since
C:Until
He is listening to music.
老师布置了一项任务让同学们完成,可工作并不好做。下列同学的想法表明能积极承担责任的是()
如图为草原生态系统请根据图回答问题:
P(K2≥k0)
0.05
0.01
0.005
0.001
k0
3.841
6.635
7.879
10.828
则下列说法正确的是( )