骨盆骨折导致后 * * 断裂，尿外渗的部位是（） A.会阴浅层皮下 B.膀胱周围 C.阴茎

上海世博会会期为2010年5月1日至2010年10月31日．门票设个人票和团队票两大类．个人普通票160元/张，学生优惠票100元/张；成人团队票120元/张，学生团队票50元/张．

（1）如果2名老师、10名学生均购买个人票去参观世博会，请问一共要花多少元钱购买门票？

（2）用方程组解决下列问题：如果某校共30名师生去参观世博会，并得知他们都是以团队形式购买门票，累计花去2200元，请问该校本次分别有多少名老师、多少名学生参观世博会？

类风湿关节炎的诊断标准中关于X线表现的最低要求是（）

A.骨质疏松和关节间隙变窄

B.关节畸形

C.关节间隙变窄

D.骨质疏松

E.骨性强直

（16分）医用氯化钙可用于补钙抗过敏等，以工业碳酸钙（含少量Na⁺、Al³⁺、Fe³⁺等杂质）生产医用二水合氯化钙（CaCl₂ ·2H₂O的质量分数为97.3—103.0%），工艺流程为：

(可能用到的原子量：Cl  35.5  Ca 40  O 16  )

（1）CaCO₃与盐酸反应的离子方程式                                      。

（2）过滤时需用的玻璃仪器除烧杯、玻璃棒外还有      。滤渣主要成分的化学式     。

（3）酸化时加盐酸的目的为：

①                                                                ，

②防止Ca²⁺ 在蒸发时发生水解。

（4）为什么蒸发结晶要保持在160℃：                                    。

（5）为测定样品中CaCl₂ ·2H₂O的含量，称取0.7522g样品并配成250mL溶液，分别取该溶液25.00mL于三个锥形瓶中，用0.04mol/LAgNO₃溶液进行三次滴定，消耗 AgNO₃溶液的平均体积为20.39mL。

①通过计算，样品中含CaCl₂ ·2H₂O的质量分数      。（只写计算式不计算结果）。

②若所测样品 CaCl₂ ·2H₂O的质量分数偏高（忽略其它实验误差），可能的原因之一为                                            。

Manners nowadays in metropolitan cities like London are practically non-existence, it’s nothing for a big, strong schoolboy to elbow an elderly woman aside in the dash for the last remaining seat on the tube or bus, much less stand up and offer his seat to her.

This question of giving up seats in public transport is much argued by young men, who say that, since women have claimed equality, they no longer deserve to be treated with courtesy 礼貌、谦让) and that those who go out to work should take their turn in the rat race like anyone else. Women have never claimed to be physically as strong as men. Even if it is not agreed, however, that young men should stand up for younger women, the fact remains that courtesy should be shown to the old, the sick and the burdened. Are we really so lost to all ideals of unselfishness that we can sit there indifferently reading the paper or a book, saying to ourselves “First come, first severed”, while a grey-haired woman, a mother with a young child stands? Yet this is all too often seen.

Older people, tired and quick-tempered from a day's work, are not angels, either-far from it. Many a brisk argument or an insulting quarrel breaks out as the weary queues push and shove each other to get on buses and tubes. One cannot commend this, of course, but on does feel there is just a little more excuse.

If cities are to remain pleasant places to live in at all, however, it seems imperative（迫切的）, not only that communications in transport should be improved, but also that communication between human beings should be kept smooth and polite. All over cities, it seems that people are too tired and too rushed to be polite. Shop assistant's won't bother to assist, taxi drivers growl at each other as they dash dangerously round corners, bus conductors pull the bell before their desperate passengers have had time to get on or off the bus, and so on and so on. It seems to us that it is up to the young and strong to do their small part to stop such deterioration（恶化）.

小题1:What is the writer's opinion concerning courteous manners towards women?

A．Since women have claimed equality, they no longer need to be treated differently from men.

B．It is generally considered old-fashioned for young men to give up their seats to young women.

C．"Lady First" should be universally practiced.

D．Special consideration ought to be shown to them.小题2:According to the passage communication between human beings would not be smoother unless ________.

A．people were more considerate towards each other

B．people were not so tired and quick-tempered

C．women were treated with more courtesy

D．public transport could be improved.小题3:The author probably does NOT agree that in big cities _______.

A．Life will be even worse if no change is made

B．transport conditions are rather poor

C．it’s not uncommon to see people quarrel in public places

D．it’s unreasonable to require the tired people to be polite小题4:The main purpose of the author is to ________.

A．call on people in big cities to pay more attention to politeness

B．blame the schoolboys’ rude behavior towards elderly women on the tube or bus

C．criticize the fast pace of city life

D．tell young men to give their seats to elderly people小题5:How could you describe the tone of this passage?           

A．acceptable

B．opponent

C．negative

D．encouraging

下列叙述中正确的是______ 。

A．软件交付使用后还需要进行维护

B．软件一旦交付使用就不需要再进行维护

C．软件交付使用后其生命周期就结束

D．软件维护是指修复程序中被破坏的指令