最小成本法又称：
A．成本效果分析
B．成本效益分析
C．成本鉴定分析
D．成本效用分析
E．成本效率分析
参考答案：C
根据句子意思，用括号内所给词的正确形式填空。
1. David Beckham is a famous football _______ （play）.
2. Mr. Wu teaches _______ （we）English. He is a very good teacher.
3. Linda often helps her friends. She is a _______ （help）girl.
4. Look，the baby has only three _______ （tooth）.How lovely ！
5. Lily and I _______ （be）in the same class. We are classmates.
（）处于五岳之首
