根据内容提示完成句子（每题1分，共5分）

小题1:It was also a treasure ______ ______ gold and jewels, which took the country’s best artists about ten years to make.

小题2:Although he had ______ _______ _______for the final of the race he decided at first not to take part.       

小题3:We are determined to create ________ ________ ________ system.   

小题4:You should _______ ________ _______ _______the rainforest where I live and appreciate how the animals live together.

小题5:_______ _______ _______ ______ that Kip Keino became the only Kenyan sportsman ever to appear on the cover of the world famous sports magazine Sports Illustrated.

柴油的燃烧性表示柴油的（）能力。

A、闪火

B、爆炸

C、自燃

D、着火