将盛有一定浓度蔗糖溶液的透析袋口扎紧后浸于蒸馏水中，下图表示透析袋中蔗糖溶液浓度与时

分析下面资料回答问题：

资料：2009年6月22日，教育部和卫生部联合印发了《学校甲型H1N1流感防控工作方案（试行）》，明确提出了各种防控措施，现列举部分如下：①加强教室、图书馆（阅览室）、宿舍等学生和教职员工学习工作、生活场所的卫生与通风，保持空气流通．②落实晨检制度．确诊病例应按照当地卫生部门的要求，及时接受隔离治疗．因甲型H1N1流感暂时停课的学生，必须在恢复健康，经有关卫生部门确定没有传染性并出具有效的复课证明后方可复学．③如果14天内，同班级出现2例及以上甲型H1N1流感病例时，该班级可停课．

资料二：张华同学持续几天咳嗽后发热，怀疑患了甲型H1N1流感，但是经医院诊断是细菌感染引发了肺炎，用药后得以康复．

（1）甲型H1N1流感病原体在结构上的主要特点是只有______．

（2）资料一列举的①②条措施，分别属于传染病预防措施的哪个方面：①______、②______．

（3）甲型H1N1流感疫苗接种后会刺激人体内的淋巴细胞，从而产生______，以抵抗甲型H1N1流感病毒的感染，这种免疫属于______免疫．

When I was 17, I read a quote that went something like:"If you live each day as if it were your last, someday you’ll most certainly be right." It made an impression on me, and since then, for the past 33 years, I have looked in the mirror every morning and asked myself, "If today were the last day of my life, would I want to do what I am about to do today "
Remembering that I’ll be dead soon is the most important tool I’ve ever encountered to help me make the big choices in life.
About a year ago I was diagnosed with cancer. The doctors told me this was almost certainly a type of cancer that was incurable, and that I would live no longer than three to six months. My doctor advised me to go home and get my affairs in order, which is doctor’s code for preparing yourself to die.
I lived with that diagnosis all day. I was completely in despair. Later that evening I had another biopsy and my wife told me that tumor turned out to be curable with surgery. I had the surgery and I’m fine now.
This was the closest I’v been to facing death. To tell the truth, no one wants to die. And yet death is the destination we all share. No one has ever escaped it. It clears out the old to make room for the new. Right now the new is you, but someday not too long from now, you will gradually become the old and be cleared away.
Your time is so limited that you shouldn’t waste it repeating someone else’s life. Don’t be trapped by dogma-which is living with the results of other people’ s thinking. Don’ t let the noise of others’ opinions drown out your own inner voice. And most important, have the courage to follow your heart. It somehow already knows what you truly want to become. Everything else is secondary.

The doctor advised the author to go home and get his affairs in order because______.

A. he had to rest at home
B. his disease couldn’t be cured
C. his disease was not serious at all
D. he had to wait for the result of the rest

堆肥工程系统包括（）.

A.原料的预处理

B.发酵

C.后处理

D.贮存

照明电路的常见故障主要有断路、短路和( )3种。

A．漏电

B．过电流

C．超负荷

D．过电压

世界卫生组织号召使用铁臸的炊具，这是因为（）。

A.铁是骨骼和牙齿的重要组成部分

B.铁有利于蛋白质的合成

C.铁是维生素C的重要组成部分

D.铁是血红蛋白的成分