2014年3月29—31日,甘肃省人工影响天气办公室抢抓有利天气时机,实施了今年甘肃省首次飞机人工增雨作业。增雨作业效果明显,实际增加降水约0.36亿吨。这表明( )
A:规律具有客观性、普遍性
B:规律是不变的,可变的是人的主观能动性
C:人们可以把握规律、改造规律
D:规律是可以被人们认识和利用的
A:Our new school is big and nice. There is a gym in our school now.
B:Yes, and there is a big library, too.
450+15×6×7=____
56+37﹣80+16=
31.5+5=
12﹣1.1=
1.2×0.2=
2.87÷0.7=
1÷ 45 =
16 +56 =
715−115 =
415÷25 =
38×45 =
30÷50=
0× 78 =
25×8=
14+15 =
12×23 =
Mr. Wang wants to go to the post ____. It's not far from his home. He walks ____Winter Street. He turns ____at Spring Street. Then he walks straight. It's over there. It's ____the flower shop and the ____.