给小动物找家。

    There is a man and he calls the police when he loses a pet. He a lways asks the police to help him look for it.

    “I lost my pet bird，”he tell the police one day.“She can sing songs. Can you find her for me?”

    “I'm sorry，”the policeman says.“It isn't our job（工作）to look for birds. If you leave a window open in your house，the bird may come back.”

    Another time，the man calls the police and says，“I lost my cat. （A）你能帮我找到他吗？He can  talk. ”

    “I'm sorry，”the policeman says.“（B）It isn't our job to look for cats. You should put the telephone down quickly. Maybe（也许）he is calling you now and tells you where he is. ”

合成氨反应（N₂+3H₂⇌2NH₃+92.4KJ）在化学工业和国防工业具有重要意义．工业合成氨生产示意图如图所示．

（1）X的化学式为____ ；X的状态为____ 态．

（2）据图分析，下列说法正确的是____ （填写编号）．

a．在此温度下，有利于平衡正向移动，可提高氨的产量

b．铁触媒的使用有利于平衡正向移动

c．工业生产受动力、材料、设备等条件的限制，选择此压强

d．为提高原料的转化率，采用循环操作

（3）常温下氨气极易溶于水，其水溶液可以导电．

①氨水中水的离子积常数的数值是____ 

②将相同体积、相同物质的量浓度的氨水和盐酸混合后，溶液中离子浓度由大到小依次为____ 

试着分析珠江三角洲经济迅速发展的原因。（从区位因素，政策因素，人文因素分析）