信息检索的顺查法属于下列______中的一种方法。
A．循环法 B．追溯法 C．常用法 D．时序法
参考答案：C
用所给单词的适当形式填空。
1. Yesterday, I (walk) to the park.
2. Li Ming is (play) football.
3. He and she (go for a walk) every morning.
4. Jenny often (go) home at 7:00 in the afternoon.
5. (do) you have a nice trip last week (上周)?
水泥混凝土面层应按（）进行质量评定。
A．分项工程
B．分部工程
C．单位工程
D．单项工程
