产品单项质量系数是指产品某一技术经济参数的实际值与________之比。

I was going to bed the other night when my wife told me that I had left the light on in the shed（储藏室）. She could see it from the bedroom window. As I looked for myself, I saw that there were thieves in the shed taking things. I phoned the police, but they told me that no one was in this area to help at this time, but they would send someone over as soon as they were free.

I said OK, hung up, and waited one minute, then phoned the police back, “Hello, I just called you a minute ago because there were thieves in my shed. Well, you don’t have to worry about them now because I’ve killed them all.”

Within five minutes there were six police cars in the area. Of course, they caught the thieves very quickly. One of the officers said: “I thought you said that you’d killed them!” I replied with “I thought you said there was nobody free!”

小题1:There were thieves in the        .

A．shed

B．bedroom

C．kitchen

D．garden小题2:The man        when he found the thieves.

A．caught them by himself

B．called the police at once

C．did nothing but wait

D．killed them小题3:The police said that        so they couldn’t come and help at first.

A．it was too far

B．the car was broken

C．they were all busy

D．it was too cold小题4:The police        when the man called them again.

A．found it boring

B．took it serious

C．let it go

D．have a rest小题5:The thieves were        at the end of the story.

A．lost

B．killed

C．caught

D．away

下图是鲫鱼的骨骼图片和外部形态图，请识图作答：（14分）

（1）鱼的骨骼在身体内部，身体内有由脊椎骨组成的      ，称为         动物。

（2）鱼的体型大多呈_______型，有利于减少在水中运动的_______。鱼的体表被覆光滑的_______，能分泌粘液，起到_______的作用。

（3）鲫鱼在水中游泳时口和鳃盖后缘在不停地交替张合，这是鱼在_________。鲫鱼的呼吸器官是_______，它的主要部分是＿＿＿＿。

（4）鱼在水中通过_______和_______的摆动以及_______的协调作用游泳。图中的①是_______；⑥是_______

如图所示，四边形ABCD是一个正方形，在其所在平面有一匀强电场，相同的带正电的粒子以相同的初动能沿不同方向从A点出发，已知能够运动到B、C、D三点的粒子动能分别为5J、7J、4J．则这些粒子的初动能为（　　）

A．1J

B．2J

C．3J

D．5J

默写古诗文中的名句名篇。（6分）

小题1:江山如此多娇，                        。（毛 * * 《沁园春·雪》）

小题2:足蒸暑土气，                        。（白居易《观刈麦》）

小题3:               ，虫声新透绿窗纱。（刘方平《月夜》）

小题4:无意苦争春，                   。（陆游《卜算子·咏梅》）

小题5:                  ，人迹板桥霜。（温庭筠《商山早行》）

小题6:燕子来时新社，                        。（晏殊《破阵子》）

体积为20cm³，质量为89g的空心铜球，若在其空心部分装满水，求铜球的总质量为多少？（已知ρ_铜=8.9×10³kg/m³）