下列句中加下划线词的感情色彩没有变化的一项是（   ）

    John Clark was a postman. He was fond of dogs. However, when he was delivering（投递）letters, he found that 1dogs were his friends. One particular dog called2, who lived at No.108 Turner Road, was one of John's 3. Whenever John came near his 4house, Spot would lie in and 5out on John, barking（吠叫）and trying to 6his ankles.

    After a heavy snow,7was freezing that morning. The road was covered with8. John was afraid of 9 down, so he10his bike and walked with11steps. Unfortunately, John slipped on a patch of ice, which was opposite to No.108 Turner Road. Spot12this as John together with his bike made such a big noise.Spot jumped onto John's 13and tried to bite his neck.Quick as a flash, John,14hands were full of letters, bit15on the leg.

    John Clark said later, it was the 16thing I could do.I don't approve of（赞成）17to animals, but that dog18 had it coming. Since that day I've had no 19at No.108.Spot always hides round the 20of the house when he hears me coming.

依次填入下列各句横线处的成语，最恰当的一组是（  ）

①_____，有言必践，传送着中国的极大诚意，展示了一个负责任大国的襟怀，赢得了世贸成员和国际舆论的佳评。

②出了事故，首先应调查原因。“没有调查就没有发言权”，这是决策的科学化问题。古今之市领导，似乎还在车上，就作出重大决定了。而且______，权重如天。

③在推销的过程中，应该认真准备，力求表达得精炼准确，______，以达到最佳效果。