在SQL语句定义查询范围时，谓词in可以用来查找属性值属于指定集合的元组，它实现“

《规划环境影响评价条例》规定：审查小组中专家人数不得少于审查小组总人数的（）。

A.三分之一

B.二分之一

C.四分之一

D.四分之三

根据首字母写单词。（１０分）

1. Today is the f_______ day of your holiday.

2. Don’t w_______ the baby up. She is sleeping.

3. He is playing c_______ games.

4. —How often do you go to the library?      —Three t_______ a week.

5. How long can I k_______ it?

6. Wang Jing usually t_______ a bus to school.

7. Mike wants to rent a fully f_______ house.

8. If you p_______ in the wrong place, you’ll get a ticket.

9. She usually w_______ TV in the living room.

10. The teacher is waiting for us. Let’s go to the t_______ room.

正交平面

读世界某区域图，其中①②③图均表示同一区域，且其图幅依次减少四分之三。读图回答下列各题。

若①图比例尺为1∶N，则②图、③图的比例尺依次为（）

A．2∶N3∶N

B．1∶2N1∶3N

C．2∶N4∶N

D．1∶2N1∶4N