下列不属于东北三省形成产业是( )
A:钢铁、机械
B:石油、化工
C:煤炭、电力
D:轻纺、电子
“五一”期间,小强一家开小车到扬州市旅游,到路口时,看到路边标志牌如图所示.此后小车用1min匀速通过一段长为600m的路段.求:
2×0.7与0.2×7的结果相同,意义也相同。
40×30+15=____
There be, new, many kinds of, boss, friendly, men's clothes, women's clothes, boys' and girls' clothes, cheap, expensive, enjoy, sell well
家蚕是典型的变态发育过程它的发育过程可分为受精卵→____ →蛹→____ 。