A:What do you think has happened to Tom
B:What do you think Tom has happened
C:Do you think what has happened to Tom
D:Do you think what Tom has happened
如图中①②③表示的农牧业分别是:( )
tiào wǔ
tuō dì
wěi bɑ
____
分类法是一种简单易行的科学方法.某同学用表格的形式对所学知识进行分类,其中甲与乙是包含关系.下列选项正确的是( )
选项
甲
乙
A
化学变化
木条燃烧、水的蒸发、铁钉生锈
B
纯净物
液态氧、干冰、烧碱
C
复分解反应
碳酸分解、酸碱中和反应
D
清洁能源
太阳能、风能、含硫煤
— It's . Mine is ten yuan.