A:
B:
C:
D:
实验室有三瓶失去标签的试剂,分别是Na2CO3、NaCl、AgNO3,实验员选择了一种试剂就把它们区别开来了,这种试剂是( )
阅读下列短文, 从每题所给的四个选项(A、B、C、D)中选出最佳选项。
Film Reviews(影评)
James
I really enjoyed this movie.It's a fun movie for the whole family.I had really good laughs and enjoyed being there
Sam
I would recommend this movie to everyone.In fact, when you go to see it together with your family or friends, I think this movie has something you will really enjoy!
John
I have seen some movies of this kind, but this one is the best.It is so well made.Some of the scenes are so beautiful.
Mary
I went to see this movie with my nine-year-old daughter this Tuesday.I really didn't know too much about it before.My daughter and I were surprised at how funny it was.Just couldn't help laughing.I would recommend this movie to the whole family .
三棱锥A﹣BCD中,AB=AC=AD=2,∠BAD=90°,∠BAC=60°,∠CAD=60°,则 AB→⋅CD→ =( )
这几年浙江各地的文化节异彩纷呈。普陀山南海观音文化节、遂昌汤显祖文化节、苍南畲族风情旅游节等节庆的举办,提升了形象、聚集了人气、拉动了经济的发展。这表明( )
①文化是一种物质力量
②文化与经济相互交融
③文化具有区域性特征
④文化是人类实践的产物