问题 选择题

能用于监测大气污染的指示植物是(  )

A.蕨

B.卷柏

C.苔藓

D.蓝藻

答案

苔藓植物无根,有茎、叶的分化,但体内无输导组织,叶只有一层细胞构成,二氧化硫等有毒气体容易从背腹两面侵入而威胁苔藓植物的生活,因此我们常把苔藓植物作为检测空气污染程度的指示植物,如苔藓.而蕨和卷柏属于蕨类植物,蓝藻属于藻类植物,都没有监测大气的作用.可见C符合题意.

故选:C

材料分析题

阅读材料,回答下列问题。

材料一:

    “珠三角正面临20年来最严峻的时刻。”今年初有关专家的警告,针对的是农民工外流、企业招工难问题而发,谁料刚过半年,这一问题已被企业倒闭、工人欠薪所取代,而港资工厂则首当其冲。

材料二:

    珠三角地区产业转移出现一种新趋势,由以往一味向北边内陆地区转移,开始向南边越南、印尼等东南亚国家转移。

材料三:

    由于近年来工业发展,城市化的不断推进,珠江三角洲地理水环境逐渐恶化,下图是珠江河口潮流界范围示意图(海洋涨潮时,潮水沿河上溯一定的距离,其达到的最远断面,称为潮流界)。

(1)珠江三角洲在这次企业倒闭潮中,主要倒闭的企业包括下列哪些类型?(双选)[ ]

    A、原料导向型工业

    B、劳动密集型工业

    C、出口导向型工业

    D、高科技工业

(2)分析珠三角地区产业转移出现由内陆地区转向东南亚国家的趋势原因。产业转移对珠三角地区可持

    续发展有什么积极的意义?

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(3)根据材料三分析,影响潮流界位置的自然因素主要有哪些?(至少二三个)

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(4)近年来海水上溯到珠江内的距离越来越长,使河水盐度增加,导致农业减产,工业设备受损,人民

    生命健康受到威胁。试分析应采取的主要措施。

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单项选择题

My First Experience with AIDS Patients

我初次接触艾滋病人

by Marc Kielburger

I was ushered to the AIDS ward of a hospice in the slum.I would later learn that the ward did not exist,at least not officially.Not a single person in Thailand had AIDS,according to the Thai government at the time.People got"sick,"of course,sometimes"very sick."but no one had AIDS.The hospice was home to an ever-growing number of"very sick"people.

I entered the ward and was greeted by two Thai nurses.

"Thank goodness you are here,Marc,"said the first.

"You’re a doctor,right"

I shook my head.

"So you are a medical student then!"

I shook my head again.

"But you know medicine,right"

"Kinda,"I offered."I watch E.R.,every Thursday"

After a rapid exchange in Thai,the first one said,"NO problem.Get ready for your fou- hour medical school training!"

"But in my country medical school takes years!" I protested.

"We don’t have that long," she replied. "So we better get started. "

During the next few hours, I learned to clean wounds, administer IVs, treat bedsores, and dispense medicine. The work was punishing, made worse by stifling heat, frequent blackouts, and an incredible stench in the air. I tried desperately to hide my weak nerves and queasy stomach, but more than once dashed for the bathroom to throw up.

Just when it seemed my training was coming to an end, the nurse took me aside. "There are only two more things you need to know," she said. "On the left-hand side of the ward, you will find what we call the Exit Area. " As it turned out, she meant "exit" in the largest sense of the word. Terminally ill patients were hidden behind a curtain and then exited out of the ward after death. "The second thing you need to know," she continued, "is that we haven’t had a day off in three weeks. You’ll be looking after the ward by yourself for the next shift. "

My jaw dropped.

"Don’t worry, Mare," said the other nurse, patting me on the shoulder before turning to leave. "Think of this as the beginning of your residency !" And with that, they walked out. Alone and petrified, I tried unsuccessfully to keep calm.

I counted to twenty-four. That’s how many AIDS patients were in my charge. What am I going to do I thought. What can I do I fell back on my training with the Canadian government and put my talents to work. I served patients water-some with ice, some without. Next, I tried to cheer up everyone, myself included, giving enthusiastic high-fives to patient after patient. Soon enough, everyone was laughing. Some were laughing with me, others most definitely at me, but I didn’t care. As long as I could keep people smiling, I was sure it would all be fine. And it was. Until a short while later, when a patient in the Exit Area began to choke. He had fluid in his lungs and could not breathe. As I crossed the floor, I could hear the man gasping for air. Fumbling and scared, I pulled back the curtain and administered the medicine the nurses had recommended. The man didn’t respond. With nothing left to offer, I sat down and held his hand, looking into his eyes as he breathed heavily for a while and then stopped. Watching him slip away, I was hit by a feeling of anguish such as I’d never felt, either before or since. It haunts me to this day.

Which of the following did Marc NOT do to the patients()

A.Giving them operations.

B.Amusing them.

C.Administering medicine to them.

D.Sitting by their deathbeds.