柴油机U型燃烧室特点？

消费者行为分析中提到：同一阶层消费行为具有相似性，也具有差异性。

读部分国家城市化及其经济发展情况比较表，回1～3题。

1．近20年中，上述五国城市化发展最快的是[ ]

A．①

B．②

C．③

D．④

2．②国可能是[ ]

A．美国

B．埃塞俄比亚

C．英国

D．韩国

3．①国与③、④、⑤三国相比城市化水平较低，说明 [ ]

A．①国出现逆城市化现象

B．①国农村剩余劳动力比三国少

C．①国第二、三产业比三国落后

D．①国人口增长率比三国低

阅读理解。

Dear Editor (编辑),

     I used to be a doctor in a children's hospital. Sometimes I treated children who had been poisoned (中毒)

by medicines for older family members. The children didn't know the medicine was dangerous; they just knew

it tasted sweet. Children easily opened the bottle that we now use in China.

     Some days ago I talked about medicine with an American. He showed me a kind of plastic bottle. The

design was very quite simple and I'm sure our Chinese factories could produce these bottles. The top of the

bottle locks but can be opened by pressing down on it while turning. This is difficult for most young children

to do, though grown-ups can open these bottles very easily.

     I'm certain that the price of making such tops would be very low. As a doctor, I'd love to see this done.

And most parents would be grateful.

                                                                                                                                               Yours,

                                                                                                                                                Li Hua

1. The writer's job in the hospital was mainly to _____. [ ]

A. treat sick children

B. treat poisoned children

C. give medicine to people

D. give medicine to children

2. The doctor seems to be _____. [ ]

A. happy about China's hospital

B. angry with what has happened

C. anxious to solve the problem

D. pleased with his invention

3. The doctor thinks that we should _____. [ ]

A. study the Americans

B. buy that kind of bottle

C. produce this kind of plastic bottle

D. turn to Americans for help

4. The letter was written to the editor to ask for _____. [ ]

A. money from the newspaper

B. the plastic bottles from the readers

C. medicine from the editor

D. support from the public

下列解表药中，兼有化湿和中功效的是（）

A．紫苏

B．香薷

C．生姜

D．白芷

E．防风

前列腺肥大摘除术后患者，应用何种溶液进行膀胱冲洗