依次填人下列句子横线处的词语，最恰当的一项是（ ）①一些不法商家为了最大限度的 ，竟然在奶制品中添加三聚氰胺，坑害广大消费者。②在这次国际会议上，中国政府再次郑重 ：台湾是我国不可分割的领土，决不允许任何人制造两个中国。③反腐败和监督是一个问题的两个方面，要反腐败，必须强化监督；强化监督，必须有助于_____腐败。④遇到突发事件需要我们_____，而应变能力则需要我们平时有意思地去一点点培养。

My mother has a backache in hospital —_________________.

He told the interviewer that he had run out of money to buy old bikes.

It was hard work that won Frank the best scores on each test, — Yes. When it comes to study, hard work counts.

made a discovery, _________ of great importance to the progress of science and technology