读“甲、乙、丙三地农业商品率、畜牧业比重、种植业比重图”，完成下列各题。

1).介绍写邮件的目的；

2).晚会时间、地点：9月30日晚6点、学校报告厅：

3).晚会内容：同学们表演节目、吃月饼、赏月。

注意：1.词数100左右；2.可以适当增加细节，以使行文连贯；3.开头与结尾己给出，不计入总词数。

Dear Mr. Henry,

                                                                                                                                                              Yours sincerely,

                                                                                                                                                                   Li Hua

已知糖尿病病人尿液含有葡萄糖；肾炎病人则肾小球部位通透性大为增加，尿液中会有蛋白质．检测病人的尿液可帮助医生确定病情．小李觉得自己身体不适怀疑自己患了糖尿病或是肾炎．如何通过一定的检测确定是否患相应的疾病．请写出设计原理和具体操作步骤及结论．

（1）设计原理：

1．糖尿病患者尿液中有____ 可用____ 进行鉴定；

2．肾炎病患者尿液中有____ 可用____ 进行鉴定．

（2）操作步骤：

1．各取2mL尿液加入甲、乙两个试管中；

2．在甲试管中加入1mL____ 和____ 的混合液，水浴加热，观察实验现象；

3．在乙试管中加入1mL，震荡，再滴入几滴____ ，摇匀，观察试管中颜色变化．

（3）现象及结论：

1．若甲试管中出现____，说明小李患糖尿病；

2．若乙试管中出现____，说明小李患肾炎．

3．若甲、乙两试管中均无上述现象，说明小李既无糖尿病又无肾炎．

    Research on embryonic stem cells (胚胎干细胞) is debatable because it requires the destruction of live human embryos.

    Supporters find it easy to minimize the significance of this fact because the embryos are only a few days old—nothing more than "blastocysts (胚泡)".

    But if it's OK to destroy 5-day-old embryos to further scientific inquiry, is it OK to destroy embryos that are five weeks old? Five months? Eight months? Science can't answer that question.

    You don't have to be part of the pro-life group to have concerns about this kind of scientific research. James Thomson, the University of Wisconsin biologist has said, "If human embryonic stem cell research does not make you at least a little bit uncomfortable, you have not thought about it enough." However, the president's new order suggests we should not think too much.

    Recently, supporters of embryonic stem cell research called on president to allow experiments using "surplus (多余的)" fifty frozen embryos in fertility clinics, arguing that they would be disposed of anyway. But Obama didn't limit his new policy to these fertilized eggs.

    On the contrary, he left open the possibility of funding studies using embryos created specifically so their cells can be harvested. He did, however, reject another option. "We will ensure," he said, "that our government never open the door to the use of cloning for human reproduction. It is dangerous, profoundly wrong and has no place in our society, or any society."

    But this position is hard to square with his claimed approach. On one hand, the president says his policy is "about letting scientists do their jobs, free from pressure". On the other, he will use pressure to keep them from doing reproductive cloning.

    What this policy means is simple: It may be permissible for scientists to create cloned embryos and kill them. It's not permissible to create cloned embryos and let them live. Their cells may be used for our benefit, but not for their own.

    It's the policy that is risky not just to days-old human embryos. The rest of us are sure to receive important medical benefits from this research one day. But we may lose something even more important in a moral sense.

    Tom is a schoolboy.He is only seven years old, but he is very busy on weekdays.One Saturday he decided to relax himself, so he went to the cinema.

    It was the first time for him to do that.He bought a ticket and then went in.But after two or three minutes he came out, bought a second ticket and went in again.After a few minutes he came out again and bought a third ticket.Two or three minutes later he came out and asked for another ticket.Then the girl in the ticket office asked him, “Why did you buy so many tickets? How many friends did you meet?” Tom answered, “No, I have no friends here.But a big boy always stops me at the door and tears(撕) my ticket.”