小测验：选择正确的单词

1. This is highly profitable business.
   这是一本万利的生意。
2. He makes profitable use of what he learn.
   他很好地运用了所学的东西。
3. They feel it is profitable to play down the differences.
   他们感到不强调分歧是有利的。
4. The deal was profitable to all of us.
   这笔生意对我们大家都有利.
5. An easy,profitable means of livelihood.
   容易赚钱的生计一种轻松、有利可图的营生办法

　4个形容词解释