引用文献的分布类型
参考答案：
引文按照出版年代分布。引文按照语种的分布。引文按照期刊的分布。引文按照文献类型的分布。
用所给单词的适当形式填空 。
1. My daughter (have) many (toy). She likes them very much.
2. There (be)a lot of interesting (activity) after school.
3. Tibet(西藏)is in the (west) of China.
4. Tom often (shop) at the mall.
5.Where the boys (swim) now?
滑坡成因和发生条件是什么？有何危害？
