3 . 请根据句意指出下列句子中划线单词的词性与汉语意思。
1. Researches show that people feel unhappy, worried and lonely when they have nothing to do.
2. They displayed only a part of their products because space was limited.
3. I am determined to manage all my affairs on my own from today on.
4. The concert is conducted by a great musician.
5. The fairy’s magic changed the two brothers into two swans (天鹅).
6. The soldiers marched to the capital of the enemy country.
7. She no longer feared that they should misunderstand her.
8. There is so much conflicting advice about diet and nutrition.
9. Nuclear power plants provide about 6 percent of the world’s energy and 13～14 percent of the world’s electricity.
10. We often observe the behavior of birds.