堤防工程中，沉排护脚单元工程宜分为沉排锚定和沉排铺设两个工序，其中（）工序为主要工序。
参考答案：沉排铺设
根据句意及括号内所给英文或汉语提示，完成句子。
1. —What about _____ (fly) kites this afternoon, Kangkang?
— Good idea.
2. He often goes _____ (swim) with his classmates on Sunday.
3. I'm _____ (恐怕) I can't come with you.
4. —Don't forget to bring your _____ (吉他).
— All right.
5. Let’s have a _____ (野餐) on the farm. It’s very fun.
创建国家卫生城市，要求城市绿化美化好。其中建成区绿化覆盖率要求达到多少？
