下列4种设备中，属于计算机输入设备的是( )。A．UPS B．服务器 C．绘图仪

阅读理解。

    Henry finds a job on a farm. He is the strongest and youngest. He eats more, sleeps more, but works

less. He doesn't like to use his head, so he knows little. He has to do some unskilled (无需特殊技能的)

work. He always says he's tired and hopes to have a good rest. So he gets less money than others.

    Winter is coming. The workers are getting ready for the next year. Only Henry does nothing. The

farmer tells him to cut down some trees in the forest. The young man has to go there with a chair. He

feels lonely (寂寞的) in the forest and is afraid of the animals. So he looks around and sings loudly.

Nobody knows what he's singing. After three days, Henry doesn't cut down any trees. The farmer feels

strange. He wants to find out how the young man is working there. To his anger (生气), Henry is sitting

on the chair, cutting the tree. "Why are you sitting here to cut the trees?" asks the farmer. "Because I

can't work if lying (躺着), sir."

1. Henry doesn't like to use his head, so ______. [ ]

A. he knows little knowledge (知识)

B. he is young and strong

C. he tries to be a farmer

D. he finds a job on a farm

2. Henry gets less money because ______. [ ]

A. he sleeps more

B. he does some unskilled work

C. he isn't polite to the farmer

D. he eats more

3. Henry has to cut down the trees because ______. [ ]

A. he can do nothing except (除了) it

B. he likes to stay in the quiet forest

C. he can't get on well with others

D. he is very strong

4. Henry is ______ to stay in the forest. [ ]

A. glad

B. angry

C. safe

D. afraid

5. Henry hopes to ______. [ ]

A. make the farmer happy

B. get help

C. lie down in the forest

D. cut down more trees

划船时，桨向后划水，船才会向前行驶；溜旱冰时，相对静止的两人，只要一个用力去推对方，两人都会向相反方向运动；将吹足了气的气球嘴松开并放手，球内气体从气球嘴泄出的同时，气球会向相反的方向运动。请归纳出上述现象所共同遵循的物理概念或规律。(只需写出两条)

(1)_____________________________(2)________________________________

（5分，每空1分）下表为某健康人血浆、原尿和尿液的成分及含量（单位：克/100毫升）。请用所学知识回答下列问题：

主要成分	A	B	C
水	90	98	96
蛋白质	8．00	0．03	0．00
葡萄糖	0．10	0．10	0．00
无机盐	0．72	0．72	1．10
尿 素	0．03	0．03	1．80

（1）根据表中数据分析，在【A］和【B】、【B】和【C】之间发生的生理过程分别是              、               。

（2）在“主要成分”一栏中，作为代谢废物，还有另外一种排泄方式，这种方式是                    。

（3）如果在［C］中检测到葡萄糖，那么此人可能患有某种疾病，目前对这种病的一般治疗措施是                                。

（4）在新陈代谢过程中，人体细胞还产生表中没有列出的另一种废物，该废物自细胞排出体外时，所依据的物理学原理是                   。

正式组织的三个基本要素是协作意愿、共同目的和（）。

A.共同兴趣

B.制度规范

C.信息交流

D.权威

截平面与锥轴平行时截交线的形状是（）。

A、圆

B、矩形

C、椭圆

D、双曲线