挫伤指钝性物体强烈作用于畜体而引起的组织非开放性损伤。（）

阿波罗飞船从月球上带回的土壤样品，经分析后发现地球上含量较多的几种元素月球上都有，如O、Si、Fe、Al、Ca、H等．写出由两种元素组成的人体中含量最多的化合物的化学式______；人体中含量最多的金属元素和地壳中含量最多的非金属元素形成的化合物的化学式______，该化合物溶于水发生反应的化学方程式______，形成的混合物叫______，生成物俗称______，取上层清液测得pH______7（填“＞”、“＜”或“=”），能使无色酚酞试液变______色．

曹刿论战（10分）

十年春，齐师伐我。公将战，曹刿请见。其乡人曰：“肉食者谋之，又何间焉？”刿曰：“肉食者鄙，未能远谋。”乃入见。问：“何以战？”公曰：“衣食所安，弗敢专也，必以分人。”对曰：“小惠未徧，民弗从也。”公曰：“牺牲玉帛，弗敢加也，必以信。”对曰：“小信未孚，神弗福也。”公曰：“小大之狱，虽不能察，必以情。”对曰：“忠之属也，可以一战，战则请从。” 　　      

公与之乘，战于长勺。公将鼓之。刿曰：“未可。”齐人三鼓。刿曰：“可矣。”齐师败绩。公将驰之。刿曰：“未可。”下视其辙，登轼而望之，曰：“可矣。”遂逐齐师。

既克，公问其故。对曰：“夫战，勇气也。一鼓作气，再而衰，三而竭。彼竭我盈，故克之。夫大国，难测也，惧有伏焉。吾视其辙乱，望其旗靡，故逐之。”

小题1:解释下列句子中划线的词语。(2分)

(1)肉食者谋之，又何间焉。 间：        

(2)何以战。 以：       

小题2:翻译下列句子。（4分）

（1）一鼓作气，再而衰，三而竭。

（2）小信未孚，神弗福也。

小题3:曹刿认为“可以一战”的最重要的条件是什么？(用原文回答)（2分）

小题4:请分析这次战役曹刿取得胜利的原因。(2分)

阅读理解。

     An old friend from California called from the airport to tell me that he had arrived. I was not able to leave

the office, but I had made plans for his arrival. After explaining where my new house was, I told him that I

had left the key under the doormat (门前的擦鞋垫). Since I knew it would be quite late before I could get

back, I suggested that he make himself at home and help himself to anything that was kept in the refrigerator

(冰箱).

     Two hours later my friend phoned me from the house. At the moment, he said, he was listening to some

of my records after having had a nice meal. He had found the pan and meat in the refrigerator. Now, he was

drinking a cup of tea and hoped that I would join him soon. When I asked him if he had any difficulty finding

the house,he answered that the only problem was that he had not been able to find the key under the doormat,

but luckily, the living room window by the apple tree had been left open and he had climbed in through the

window. I listened to all this in great surprise. There is no apple tree outside my window, but there is one by

the living room window of my next-door neighbor's house!

1. When my friend arrived,I could not go to meet him because _____. [ ]

A. we were not good friends

B. I was busy at work

C. he had not told me that he would come

D. I did not want to see him

2. I listened to my friend's phone call in great surprise because _____. [ ]

A. he had not waited for me to eat together

B. he had eaten too much of the food

C. he mistook my neighbor's house for mine

D. he had left the house with the window open

3. In fact my friend _____. [ ]

A. did not enter my house

B. entered my house after he opened the door

C. entered my house by climbing through the window

D. entered my house with the help of my neighbor

4. The writer left the key under the doormat so that _____.[ ]

A. nobody would find it

B. he might not lose it

C. his family could use the same key

D. his friend could easily get it

甲公司委托乙公司购买1台机器，双方约定：乙公司以自己的名义购买机器：机器购买价格为20万元；乙公司的报酬为8000元。双方未约定其他事项。乙公司接受委托后，积极与丙公司交涉协商，最终乙公司以自己的名义从丙公司处购得该种机器1台，价款为19.5万元，乙公司为此支出了4000元费用。乙公司依约将机器交付给甲公司，但向甲公司提出，双方约定的购买机器价格与实际购买机器价格之间的差额5000元归乙公司所有，或者由甲公司承担处理委托事务而支出的4000元费用。甲公司表示拒绝，乙公司因此提起诉讼。在诉讼过程中，甲公司提起反诉，主张机器存在瑕疵，要求乙公司承担损害赔偿责任。经查，该机器确实存在质量瑕疵。　　要求：　　根据《合同法》的规定，回答下列问题：

甲公司与乙公司签订的是何种合同？

钠光谱D线

A．589.3nm
B．2.0852
C．+52.5°～+53.0°
D．标准石英旋光管
E．b形玻璃管