根据短文内容，判断下列陈述正误。正确用√，错误用×。

     Ann's bedroom is not very small. It's big. A TV set (一台) is in the room.It is on the table. There are

some red flowers on it, too. We can see a picture of trees on the wall. There is a blouse, a skirt and a light

green coat on the bed. Her shoes are under the bed. A desk is near the winder. On the desk is a clock. It'

7:00 o'clock. It 's time to go to school. But where is Ann's schoolbag? Oh, it's on the chair. Now Ann is

putting on her shoes.

( )1. We can see a dress, a coat and a sweater on the bed.

( )2. Ann's shoes are behind the door.

( )3. There is a TV set in the big bedroom.

( )4. Ann goes to school at 7:15.

(     )5. One clock is on the desk and one picture of trees is on the wall.

设有选课表，表中包含的字段有：学号C(3)，课程号C(3)，成绩N(3)。查询每门课程的学生人数，要求显示课程号和学生人数，对应的SQL语句为：　　　SELECT课程号，【14】AS学生人数FROM选课表；　　　　　GROUPBY【15】