1.As is predicted by scientists, global pollution is one of the problems that human-beings faced.

主句是全球污染是最严重问题，人类面临的做定语，

2. Competition for these jobs is very fierce and there are five

times as many applicants this year as we did last year.倆个分句并列,五倍表达为five times as many~~as

3 . As the facts show, educational program should fit into the

national plan for economical development.主句:教育大纲符合国家经济发展计划

4 . This car burns too much gas,moreover, the price is almot

twice as much as I intend to pay

是我想付的做定语，价格为主语俩倍表达为twice as much as

5 . To leam an important international event, we need to consider the historical and politial background to it.考虑﹉consider~ to

非谓语动词引导作目的状语