度为10的线性表进行冒泡排序，最坏情况下需要比较的次数为______。
题型：填空题
问题：
度为10的线性表进行冒泡排序，最坏情况下需要比较的次数为______。
题型：填空题
Julio loves to visit his grandmother . He doesn’t get to visit her very often because his family lives in a city that is six hours away .His grandmother lives in a big wooden house on a farm .It is old and looks as if it has secret hiding places .
On the third Sunday of June ,Julio’s parents took him to his grandmother’s .Since it was summer vacation, he was going to stay at grandmother’s for a whole summer . Hid cousins Mario and linda would soon be arriving. They would also be staying at their grandmother’s this summer .
A big porch (走廊) wrapped （缠绕）around two sides of the house .Julio sat in the porch swing （秋千）.He could see the trees that circle the house .They had been planted as a windbreak （防风林）.They protected the house from the wind and blowing dirt .The house was in the middle of a large flat field .
Julio watched the dirt road that led to the house .He couldn’t wait for his cousins to get there .Mario was his age ,and Linda was a year younger .They had fun together .Last summer they spent one whole morning making a fort out of sacks of seed （装种子的麻袋做成的堡垒）.Then Uncle Henry took them on a tractor ride.
Julio remembered another time with his cousins .They had gone out to explore the fields .Julio touched an electric fence and got a shock .Then they found an old snake skin. Nothing like that ever happened at his own home !
Julio could smell the dinner that his grandmother was cooking .It made him hungry .
Finally he saw a cloud of dust coming up the road .“They’re here ! They are here !”He shouted .
根据材料内容选择最佳答案。并将其标号填入题前括号内。
小题1:Why doesn’t Julio often visit his grandmother ?
A．Because he doesn’t love his grandmother.
B．Because his parents don’t let him visit his grandmother.
C．Because his home is far away from his grandmother's.
D．Because he is often ill .小题2:Who is the youngest of Julio and his cousins ?
A．Linda.
B．Julio.
C．Mario.
D．Henry.小题3:The story tells about Julio and his cousins doing all of the following except_____.
A．watching old movie
B．taking a tractor ride
C．finding a snake skin
D．making a fort from seed sacks小题4:How do you think Julio felt when he saw his cousins arriving?
A． He was worried.
B． Ht: was excited.
C．He was angry .
D． He was sad小题5:After Julio cousins arrive , when would probably happen next ?
A．They would build a fort on the hill
B．They would look for snake skins .
C．They would climb the trees in their grandmother’s yard
D．They would eat dinner at their grandmother’s house
深龋，充填复合树脂时，不用氧化锌丁香油糊剂垫底是因为（）