How much ______________these apples? [ ]

根据句意，用所给词的适当形式填空。

1. They received lots of ________ (compliment) on their wonderful performance.

2. He ________ (stick) his fork into a big piece of meat.

3. Thanks for ________ (invite) me to your birthday party.

4. I'm ________ (familiar) with the city, because it was my first time there.

5. In ________ (west) countries, people don't usually share the same dishes.

在正方形里面画一个最大的圆，这个圆的周长是12.56厘米，这个正方形的面积是______．

计算机系统的软硬件故障可能会造成数据库中的数据被破坏。为了防止这一问题，通常需要（）,以便发生故障时恢复数据库。

A.定期安装DBMS和应用程序

B.定期安装应用程序，并将数据库做镜像

C.定期安装DBMS，并将数据库作备份

D.定期将数据库作备份；在进行事务处理时，需要将数据更新写入日志文件

谈谈《美日汽车贸易高级谈判开始》一文中导语的特色。

W300-1型扣件，弹条分为（）种。