1. He ran away from home on a mad impulse.2. When I was fighting with my sister I had a mad impulse to smash things.
 on a mad impulse have a mad impulse to do something請參考例句.
1. 一氣之下離家出走.2. 當我跟妹妹吵架時我有摔東西的衝動.
這是一個連環問題: 燃燒石油導致二氧化碳增加，二氧化碳增加導致溫室效應，溫室效應導致冰層融化、海平面上升。 (請填空)
This is a chain o problems. Burning oil leads to increase in carbon dioxide, which leads to the greenhouse effect, which leads to melting of glaciers, which leads to rising sea levels.