泌尿系统损伤最常见的部位是A．肾脏 B．输尿管上段 C．输尿管下段 D．膀胱 E．尿

聚合硫酸铁（PFS）是一种新型高效的无机高分子絮凝剂，广泛用于水的处理．用铁的氧化物为原料来制取聚合硫酸铁，为控制水解时Fe³⁺的浓度，防止生成氢氧化铁沉淀，原料中的Fe³⁺必须先还原为Fe²⁺．实验步骤如下：

（1）用98%的硫酸配制28%的硫酸，所需的玻璃仪器除量筒外，还有______．

（a）玻璃棒　　（b）烧杯   （c）烧瓶

（2）步骤II取样分析溶液中Fe²⁺、Fe³⁺的含量，目的是______和确定氧化Fe²⁺所需NaClO₃的量：

（a） 控制溶液中Fe²⁺与Fe³⁺含量比　　（b） 确保铁的氧化物酸溶完全    （c） 确定下一步还原所需铁的量

（3）完成步骤IV中的氧化还原反应：补充产物并配平：

______ Fe²⁺+______ClO₃^-+______H⁺=______Fe³⁺+Cl^-+______

（4）聚合硫酸铁溶液中SO₄²¯与Fe³⁺物质的量之比不是3：2．根据下列提供选择的试剂和基本操作，测定聚合硫酸铁产品溶液中SO₄²¯与Fe³⁺物质的量之比．测定时所需的试剂______．

（a） NaOH　　　（b） FeSO₄　　　（c） BaCl₂　　　（d） NaClO₃

需要测定Fe₂O₃和______的质量（填写化合物的化学式）．

Being safe in your everyday life needs knowledge(知识)．If you remember the following information，your life will be much safer．

Always notice the environment around you．You shouldn’t walk alone outside．Make sure where the public phones are．If anything dangerous happens，you can find them easily．

Your bag should be carried towards the front of your body instead of putting it on your back．When a bus is full of people, it is easy enough for a thief to take away the things in the bag on your back．

If you are followed by someone whom you don’t know, cross the street and go to the other way，let the person understand that you know he or she is after you．Next，don’t go home at once．You are safer in the street than you are alone in your home or in a lift(电梯)．

If you have to take a bus to a place far away, try to get to the stop a few minutes earlier before the bus leaves．This stops other people from studying you．On the bus，don’t sit alone．Sit behind the driver or with other people．Don’t sleep．

小题1:Which of the following is NOT safe when you are out?

A．Go home alone late at night．

B．Make sure where the public phones are．

C．Don’t get to the bus stop too early．

D．Always notice the environment around you．小题2:When you are followed by someone on your way home，you should  to make yourself safe．

A．run home

B．find a lift and go in

C．turn back and walk towards him or her at once

D．cross the street and go to the other way小题3:What can you learn from the text?

A．How to notice the environment around you.

B．How to be safe in your everyday life.

C．How to cross the street.

D．How to use the public phones.

（）反映有关当前预报积冰条件的最准确信息。

A.Low-LevelSigWeatherProgChart（低空重要天气预报图），RADAT（雷达自动数据传输），和AreaForecast（区域天气预报图）

B.PIREP（飞行员报告），AreaForecast（区域天气预报），和FreezingLevelchart（积冰高度图）

C.AIRMET（低空航空气象情报）和SIGMET（中高空重要气象情报）

D.VOLMET（对空气象广播）、AIRMET（低空航空气象情报）

征信教育是征信行业发展的需要，是信息主体权益保护的需要，是培养征信人才的需要，是全社会树立诚信意识和传播征信文化的需要。

1928年至1930年间，中 * * 党在农村建立的根据地主要有（）

A.中央区

B.鄂豫皖区

C.湘鄂西区

D.左右江区

E.晋察冀区