拱圆形连接屋面温室跨度是()
A.1-2米
B.3-4米
C.6-9米
D.10-15米
参考答案:C
用in, at, for, of, with填空。
1. Look ________ the picture.
2. I have porridge ________ breakfast.
3. They are playing ________ their friends.
4. We get up ________ the morning.
5. This is a picture ________ a library.
在年检年度内发生类别转变的旅行社,按照转变前的类别参加年检。