1 . 从方框中选出合适的单词，并用其正确的形式填空，其中有两个词是多余的

explore     recognize       achieve     previous       benefit       dependent     annual

1. A good diet is________ to health.
2. The old man has a physical examination ________.
3. An Olympic gold medal is an amazing________ for one so young.
4. Now that you have reached the age of 18, you should be________ of your parents.
5. With the continuous development of technology, more and more people are eager________ mysterious space.