自动生化分析仪的光源能量降低对单色光影响最大的波长是（） A.300nm B.340

阅读短文，回答问题。

　　一天，小老鼠外出寻食，不小心中了机关，关进了捕鼠器，被一头路过的狮子救了出来。小老鼠向狮子敬礼，并感激地表示：“本人将铭（míng）记你的大恩，日后一定报答。”

　　狮子感到好笑地说：“老弟，你一只小小的耗子能帮我什么忙？”     

　　一个星期后，狮子掉进了猎人埋伏的捕兽网，它又蹦又跳，大吼大叫也无济（jì）于事，小老鼠听到了狮子的吼声，赶来安慰它说：“请您稍等一会儿，现在该我来搭救您了。”狮子懊丧 （ào sàng）地说：“你连把刀子都没有……”小老鼠没再说什么，用牙把网啃了一个大窟窿（kū long），狮子很快钻出了捕兽网，它高兴地喊了一声：“自由万岁 !”     

1．短文一共有        个自然段。

2．文中画线句是         句，改为陈述句为：                                  

3．狮子为什么“感到好笑”？

4．这个故事告诉我们什么道理？在正确答案后的括号中打“√“。 

（1）不要骄傲自大，看不起比自己差的人。                              （    ）        

（2）一个人不要拒绝别人的帮助。                                       　   （    ）       

（3）人各有长处和短处，要互相帮助。                                       （    ）        

（4）一定要报答别人的救命之恩。                                               （    ）

肝硬化出血倾向的主要原因是

A．维生素缺乏

B．血小板功能不良

C．凝血因子减少

D．毛细血管脆性增加

E．肝脏解毒功能下降

阅读理解。

      My favorite teacher's name was "Dead-Eye" Bean. Her real name was Dorothy. She taught

American history to eighth graders in the junior high section of Creston, the high school that served

the north end of Grand Rapids, Mich. It was the fall of 1944. Franklin D. Roosevelt was president;

American troops were battling their way across France; Joe DiMaggio was still in the service; the

Montgomery bus boycott was more than a decade away, and I was a 12-year-old black newcomer

in a school that was otherwise all white.

     My mother, who had been a widow in New York, had married my stepfather, a Grand Rapids

physician, the year before, and he had bought the best house he could afford for his new family.

The problem for our new neighbors was that their neighborhood had previously been pristine(in their

terms) and they were ignorant about black people. The prevailing wisdom in the neighborhood was

that we were spoiling it and that we ought to go back where we belonged (or, alternatively, ought

not to intrude where we were not wanted). There was a lot of angry talk among the adults, but

nothing much came of it.

    But some of the kids, those first few weeks, were quite nasty. They threw stones at me, chased

me home when I was on foot and spat on my bike seat when I was in class. For a time, I was a

pretty lonely, friendless and sometimes frightened kid. I was just transplanted from Harlem, and

here in Grand Rapids, the dominant culture was speaking to me insistently.

    I can see now that those youngsters were bullying and I was culturally disadvantaged. I knew

then that they were bigoted(偏执的), but the culture spoke to me more powerfully than my mind

and I felt ashamed for being different - a nonstandard person.

    I now know that Dorothy Bean understood most of that and disapproved of it. So things began

to change when I walked into her classroom. She was a pleasant-looking single woman, who looked

old and wrinkled to me at the time, but who was probably about 40.

    Whereas my other teachers approached the problem of easing in their new black pupil by ignoring

him for the first few weeks, Mrs. Bean went right at me. On the morning after having read our first

assignment, she asked me the first question. I later came to know that in Grand Rapids, she was

viewed as a person who believed, among other things, that Negroes were equal.

     I answered her question and the follow-up. They weren't brilliant answers, but they did establish

the fact that I had read the assignment and that I could speak English. Later in the hour, when one

of my classmates had failed to give an answer, Miss. Bean came back to me with a question that

required me to clean up the girl's mess and established me as a smart person.

    Thus, the teacher began to give me human dimensions, though not perfect ones for an eighth

grader. It was somewhat better to be a teacher's pet than merely a dark presence in the back of the

room.

    A few days later, Miss Bean became the first teacher ever to require me to think. She asked my

opinion about something Jefferson had done. In those days, all my opinions were derivative(缺乏独

创性的). I was for Roosevelt because my parents were and I was for the Yankees because my

older buddy from Harlem was a Yankee fan. Besides, we didn't have opinions about historical figures

like Jefferson. Like our high school building or Mayor Welch, he just was.

    After I stared at her for a few seconds, she said: "Well, should he have bought Lousiana or not?"

    "I guess so," I replied tentatively.

    "Why?" she shot back.

     Why? What kind of question was that, I complained silently. But I ventured an answer. Day after

day, she kept doing that to me, and my answers became stronger and more confident. She was the

first teacher to give me the sense that thinking was part of education and that I could form opinions

that had some value.

     Her final service to me came on a day when my mind was wandering and I was idly digging my

pencil into the writing surface on the arm of my chair. Miss Bean suddenly threw a hunk of gum

eraser at me. By amazing chance, it hit my hand and sent the pencil flying. She gasped, and I crept

(爬) shamefacedly after my pencil as the class roared. That was the ice breaker.

     Afterward, kids came up to me to laugh about "Old Dead-Eye Bean." The incident became a

legend, and I, a part of that story, became a person to talk to.

1. Why did the author moved to Grand Rapids?

A. Because his mother was a widow.

B. Because he knew Miss Bean was in Creston, Grand Rapids.

C. Because his mother got married to a physician in Grand Rapids.

D. Because black people could live anywhere they liked at that time.

2. When the author first moved to Grand Rapids, the other kids_________.

A. talked to him a lot                  

B. were friendly to him

C. were unkind to him                  

D. were curious about him and liked talking with him

3. Which of the following is not the help the author got from Miss Bean?

A. She punished the naughty boys who were rude to him.

B. She established him as a smart person in front of his classmates.

C. She helped him to form his own opinions.

D. She eased his relationship with his classmates.

4. Which of the following is TRUE? 

A. Most people were friendly to black people at that time.

B. My classmates' laughter hurt me when Miss Bean threw a piece of eraser to me.

C. The author's most teachers just ignored him for the first few weeks.

D. The author's answers in his first class made him a smart person in his classmates' eyes.

5. Which question is NOT answered in the story? 

A. Why did the author like Miss Bean?

B. Why did Miss Bean throw an eraser at the author?

C. Where did Miss Bean grow up?

D. Had Miss Bean got married?

下列物品进境不需办理检疫审批手续的有( )。

A．动物

B．动物产品

C．粮食、水果

D．植物种子、种苗和其他繁殖材料

UPS和柴油发电机接口问题涉及UPS和柴油发电机两个自动调节系统，两者接口时出现的不兼容问题是两个系统相互作用的结果．可以在其中一个系统或两个系统内采取适当措施予以解决．过去最常用的方法是（）

A．安装有源滤波器

B．将发电机降容使用

C．采用12脉冲整流器