A：乙烯的结构简式：C2H4
B：正丁烷的结构简式：CH3(CH2)2CH3
C：四氯化碳的电子式：
D：苯的分子式：
王阳明是明朝中期儒学的代表人物，他把理学发展到一个新的阶段，号称
无论是植物细胞还是动物细胞，它们的基本结构都包括（ ）
cooked , was , tired , visited, washed , cleaned , in , goes , told , next
My mother____busy last weekend . She____my grandma on Saturday m orning . They ____noodle together____the evening , she ____the clothes . She often____to the park, but she____my bedroom last Su nday. In the a fternoon , she went shopping . After supper , she ____stories for me .She was very ____last weekend . So I will help my mother do housework ____ weekend.
