摘要： - do you watch TV? - Twice a week. A. How many B. How far C. How long D. How often
网址：http://m.1010jiajiao.com/timu3_id_123256[举报]
In 1997, I found myself in a situation I never thought I'd be in: alone and begging for money in New York. My father had been separated from our family, and my mother had recently died from complications related to AIDS. What I remember most about such nights is lying on the cold marble floor and using my backpack for a pillow.
Even though I had lost my family, I made choices every single day to turn my life around. There was the haven for homeless teenagers called the Door, a non－profit organization that provided me with guidance, medical care and food, all of which kept me going while I completed my homework in train stations and under hallway lights. Perhaps the most surprising help though, I did not seek out﹔it found me. The New York Times told my story. In the weeks that followed, dozens of strangers reached out to me from all across the United States. At my high school, I began receiving handwritten letters of encouragement. Strangers showed up bearing clothes, books, and even hugs. Since the article mentioned I was applying to Harvard, one woman knitted a blanket for me. She attached this note to the box it was posted in: "It gets cold in those dorms. May you warm yourself knowing that people care about you".
With the help of these people, my life today bears no resemblance at all to my life then. I graduated not only from high school but also from Harvard University.
Before these people — some of them nameless— I just didn't realize how good people could be. But now I do, and I can say that the people who helped me have forever changed me. They are the reason behind my decision to join the board at the Door so that I can be part of a small team of people opening a high school for homeless teenagers .They are the reason I dedicate my life to opening pathways for others. And they are the reason I travel around the world helping people transform their own lives.
【小题1】According to the passage, the author______________.
| A．tried to change her life |
| B．often slept m friends’ homes |
| C．felt lonely because of her illness |
| D．felt quite desperate for her father |
| A．It helps the homeless teenagers. |
| B．It is an organization seeking profits. |
| C．It provides entertainment for children. |
| D．It reports the stories about the homeless. |
| A．how the author applies to Harvard |
| B．how the author struggles for her ideal |
| C．how The New York Times helps the author |
| D．how people help the author in different ways |
a. The newspaper reported her story.
b. She graduated from Harvard University.
c. She slept on the cold floor at night.
d. She joined the committee at the Door.
e. Her mother died from the illness.
| A．d→e→c→a→b | B．e→c→d→a→b |
| C．e→c→a→b→d | D．b→c→d→e→a |
| A．Patience is a virtue. |
| B．Love can be passed on. |
| C．Time waits for no man. |
| D．Honesty leads to success. |
（2003?黄冈）初中学习了氢、氧、碳、铁等元素的单质及化合物的知识．请回答：
（1）由H，0，C，Fe组成的常见化合物中，属于酸性氧化物的是
（2）氢气作为高能燃料具有的3个优点是①
（3）我国古代用墨写的字虽年深日久仍不变色，其原因是
（4）早在西汉时期，就有“曾青得铁则化为铜”的记载，其中涉及的反应方程式为
查看习题详情和答案>>
（1）由H，0，C，Fe组成的常见化合物中，属于酸性氧化物的是
CO2
CO2
，属于无机含氧酸的是H2CO3
H2CO3
，属于碱的是Fe（OH）3
Fe（OH）3
，属于有机物的是CH4 C2H5OH
CH4 C2H5OH
（只写两种）（以上各空均填写化学式）．（2）氢气作为高能燃料具有的3个优点是①
来源丰富
来源丰富
，②单位质量的氢燃烧时发热量大
单位质量的氢燃烧时发热量大
，③燃烧后不产生污染
燃烧后不产生污染
．（3）我国古代用墨写的字虽年深日久仍不变色，其原因是
在常温下，碳的化学性质很稳定
在常温下，碳的化学性质很稳定
；冬天用煤火取暖，因排气不良，易发生煤气中毒，一氧化碳使人中毒的原因是一氧化碳很容易跟血液里的血红蛋白结合，使血红蛋白结合氧气的能力大大减弱
一氧化碳很容易跟血液里的血红蛋白结合，使血红蛋白结合氧气的能力大大减弱
．潜水艇中须配备氧气再生装置，利用的是过氧化钠（Na2O2）与（CO2）反应生成碳酸钠和氧气，该反应的化学方程式为2Na2O2+2CO2=2Na2CO3+O2
2Na2O2+2CO2=2Na2CO3+O2
．（4）早在西汉时期，就有“曾青得铁则化为铜”的记载，其中涉及的反应方程式为
Fe+CuSO4=FeSO4+Cu
Fe+CuSO4=FeSO4+Cu
．（1）有A、B、C、D四种可溶性化合物，它们分别由Ag+、Na+、Ba2+、Cu2+、Cl-、SO42-、NO3-、OH- 8种离子中的两种组成（每种离子只选一次）．将A、B、C、D四种化合物的稀溶液按以下方式混合后的现象为：（微溶物视为可溶物）
①A+B→白色沉淀 ②B+D→白色沉淀 ③C+D→蓝色沉淀
写出下列物质的化学式，
A为 、B为 、C为 、D为 ．
（2）如图中的各物质均为初中化学常见物质．请根据如图所示的关系回答：
①化合物甲的元素共有 种；
②反应②的基本反应类型为 ；
③若常温下乙为无色液体，则单质C为 ；反应②的化学方程式可能为 ；
④若常温下乙为无色气体，则单质A为 ；反应②的化学方程式可能为 ．
查看习题详情和答案>>
①A+B→白色沉淀 ②B+D→白色沉淀 ③C+D→蓝色沉淀
写出下列物质的化学式，
A为
（2）如图中的各物质均为初中化学常见物质．请根据如图所示的关系回答：
①化合物甲的元素共有
②反应②的基本反应类型为
③若常温下乙为无色液体，则单质C为
④若常温下乙为无色气体，则单质A为