用所给词的适当形式填空。
1. Chinese people are very ______ (friend).
2. The girls enjoy______ (wear) beautiful clothes.
3. I hope the______ (begin) of our class is happy.
4. I like my job, because it's ______ (relax).
5. There are lots of ______ (leaf) on the ground.
6. Lions eat lots of ______ (meat) every day.
7. Let her ______ (have) a look at your new watch.
8. All the parents like their______ (child).
9. We want ______ (help) the children in Wenchuan.
10. Don't play soccer in the street. It's ______ (danger).
射线一般伴随着
或
射线产生，这三种射线中，