30.He ran towards the seaside and _______ into the water.
    A.dived         B.sank            C.headed            D.bathed

    31.—The cars give off a great deal of waste gas into streets.
    —Yes.But I'm sure something will be done to _______ air pollution.
    A.reduce        B.remove          C.collect            D.warn

    32. The thing that _______ is not whether you fail or not, but whether you try or not.
    A.matters       B.cares            C.considers          D.minds
 
    30. 正确答案：A
    他跑向海边,潜入水中.dived潜入;sank沉入;headed(向特定方向)出发;bathed洗澡.

    31. 正确答案：A
    reduce减少.我确信肯定要做一些事来减少空气污染. remove移动;collect收集;warn警告.

    32. 正确答案：A
    matters有关系,that matters是定语从句,作The thing的定语.问题的关键不在于你是否失败,而在于你是否尝试.cares关心;considers考虑;minds介意.