啤酒花采摘前要经技术鉴定，测试鲜酒花中的（）是否达到收购方要求，验收合格，便可采收。
A、水分含量
B、甲酸成份
C、有效成份
D、花粉含量
参考答案：B
用所给词的适当形式填空。
1. Kim is going to hold art_______ (exhibition) that will make him rich and famous.
2. What are you going_______ (be) when you grow up?
3. Lucy wants_______ (get)a lot of exercise every week.
4. He admires actors very much. He's going to take_______ (act) lessons every day.
5. Her parents make her (learn)a new language.
Word菜单栏中"编辑"菜单下的"复制"项相当于DOS系统下的COPY命令。
