A:How much is it?
B:How much are they?
下列成语涉及化学变化的是( )
____
①new____ ②free____ ③clever____
④ heavy____⑤cool____
海洋蕴藏着丰富的资源,是维持人类社会可持续发展的重要战略空间,新一轮“蓝色圈地”运动正如火如荼.