观察如图漫画《叫卖》，破解“眼睛”的困惑，有效的出路是（    ）

①发挥教育在文化传承中具有的特定功能

②做到“取其精华，去其糟粕”，批判继承，古为今用

③在继承的基础上发展，在发展的过程中继承

④要增强对外来文化的认同，全面吸收外来文化

①CH₄（C₂H₄）____

②CH₃CH₂OH（H₂O）____

③乙酸乙酯（乙酸）____

④溴苯 （溴）____

⑤氯化钠  （泥沙）____．

    While  Tom and Mary were on holiday at the seaside, they enjoyed 1seagulls(海鸥). They learned a lot about these2birds.
They will often come close to you on the beach when you are eating something. If you3a piece of bread to them, they will take it away quickly.
    Seagulls swim well, but they do not often dive(潜水)for fish. They are4good at flying with their wings(翅膀)。When a seagulls is flying, It puts its legs5its body. Tom often watched them6close to the ground because he like the way they7the air with their wings and put8their feet before they touched the ground. Mary liked to see them flying over the9smoothly(熟练的) and quietly without their wings moving, 10she said she didn't like the noise they made. 

甲数是635，____，乙数是多少？列式是635÷（1﹣$\frac{1}{6}$），那么横线上应补充的条件是（　　）