Paragraph 2 __________ ？ 查看材料A.What exactly is scie

Paragraph 2 __________ ？ 查看材料

A.What exactly is science.

B.How do you find an explanation.

C.What topics do you need.

D.How do you answer your child"s questions.

E.Where does your child study science.

F.How do you set up the experiment on salt and water，

请帮忙给出正确答案和分析，谢谢！