用 so that/in oder that/ in oder to/ so as to。

1. She worked hard ____  everything would be ready in time.

2. Nothing more was heard from him ____  we began to wonder if he was dead.

3. He got up early this morning ____catch the first train.

4) ____ pass the exam, he studiedeven harder.

2006年，中央财政用于“三农”的支出超过3000亿元，比2002年增长了50％以上。中央财政加大对“三农”投入的力度，有利于

①加强国民经济的基础      ②促进财政的收支平衡

③提高人民群众的生活水平    ④发展高产、优质、高效农业

A．①②③

B．①②④

C．①③④

D．②③④