Recently my father bought a Chinese pain

题型:选择题

问题:

Recently my father bought a Chinese painting, ____ was very reasonable.

A. the price of whose
B. which price
C. the price of which
D. it price
考点:关系代词非限制性定语从句
题型:选择题

当x为何值时,代数式x2-x-2与2x-1值互为相反数。

题型:选择题

关于细菌代谢产物的论述错误的是

A.产生热原质的细菌大多是G+性菌

B.250℃高温干烤才能破坏热原质

C.外毒素毒性弱于内毒素

D.细菌色素产生必须要有适宜的营养、温度等条件

E.细菌素具有一定的抗菌作用

题型:选择题

在“验证机械能守恒定律”的实验中,打点计时器所用电源频率为50 Hz,当地重力加速度的值为9.80 m/s2,测得所用重物的质量为1.00 kg.实验步骤如下:A.按照图示的装置安装仪器;

B.将打点计时器接到电源的直流输出端上;

C.用天平测量出重锤的质量;

D.接通电源开关,然后释放重物,打出一条纸带;

E.测量纸带上打出的某些点之间的距离;

F.根据测量的结果计算重锤下落过程中减少的重力势能是否等于增加的动能.

按实验要求正确地操作并选出纸带进行测量,量得连续三点A、B、C到第一个点的距离如图所示(相邻计数点时间间隔为0.02 s)。

(1)上述步骤中没有必要进行的的步骤是         ;操作不恰当的步骤是        

(2)纸带的________(左、右)端与重物相连;

(3)打点计时器打下计数点B时,物体的速度VB=         m/s;(计算结果保留两位有效数字)

(4)从起点O到打下计数点B的过程中重力势能减少量是△Ep =______________J,此过程中物体动能的增加量△Ek =_____________J;(计算结果保留两位有效数字)

(5)实验的结论是                                                  

(6)若测出纸带上所有各点到O点之间的距离,根据纸带算出各点的速度v及物体下落的高度h,则以v2/2为纵轴、以h为横轴画出的图象是下图中的          

题型:选择题

Steve, a twelve-year-old boy with alcoholic parents, was about to be lost forever, by the U.S. education system. Remarkably, he could read, yet, in spite of his reading skills, Steve was failing. He had been failing since first grade, as he was passed on from grade to grade. Steve was a big boy, looking more like a teenager than a twelve year old, yet, Steve went unnoticed... until Miss White.

Miss White was a smiling, young, beautiful redhead, and Steve was in love! For the first time in his young life, he couldn’t take his eyes off his teacher; yet, still he failed. He never did his homework, and he was always in trouble with Miss White. His heart would break under her sharp words, and when he was punished for failing to turn in his homework, he felt just miserable! Still, he did not study.

In the middle of the first semester of school, the entire seventh grade was tested for basic skills. Steve hurried through his tests, and continued to dream of other things, as the day wore on. His heart was not in school, but in the woods, where he often escaped alone, trying to shut out the sights, sounds and smells of his alcoholic home. No one checked on him to see if he was safe. No one knew he was gone, because no one was sober(清醒的) enough to care. Oddly, Steve never missed a day of school.

One day, Miss White’s impatient voice broke into his daydreams. “Steve!!” Startled, he turned to look at her.

“Pay attention!”

Steve locked his gaze on Miss White with adolescent adoration (青春期的爱慕), as she began to go over the test results for the seventh grade.

“You all did pretty well,” she told the class, “except for one boy, and it breaks my heart to tell you this, but...” She hesitated, pinning Steve to his seat with a sharp stare, her eyes searching his face.

“...The smartest boy in the seventh grade is failing my class!”

She just stared at Steve, as the class spun around for a good look. Steve dropped his eyes and carefully examined his fingertips.

 After that, it was war!! Steve still wouldn’t do his homework. Even as the punishments became more severe, he remained stubborn.

“Just try it! ONE WEEK!” He was unmoved.

“You’re smart enough! You’ll see a change!” Nothing fazed him.

“Give yourself a chance! Don’t give up on your life!” Nothing.

“Steve! Please! I care about you!”

Wow! Suddenly, Steve got it!! Someone cared about him? Someone, totally unattainable and perfect, CARED ABOUT HIM??!!

Steve went home from school, thoughtful, that afternoon. Walking into the house, he took one look around. Both parents were passed out, in various stages of undress, and the stench(恶臭) was overpowering! He, quickly, gathered up his camping gear, a jar of peanut butter, a loaf of bread, a bottle of water, and this time...his schoolbooks. Grim faced and determined, he headed for the woods.

The following Monday he arrived at school on time, and he waited for Miss White to enter the classroom. She walked in, all sparkle and smiles! God, she was beautiful! He yearned for her smile to turn on him. It did not.

Miss White, immediately, gave a quiz on the weekend homework. Steve hurried through the test, and was the first to hand in his paper. With a look of surprise, Miss White took his paper. Obviously puzzled, she began to look it over. Steve walked back to his desk, his heart pounding within his chest. As he sat down, he couldn’t resist another look at the lovely woman.

Miss White’s face was in total shock! She glanced up at Steve, then down, then up. Suddenly, her face broke into a radiant smile. The smartest boy in the seventh grade had just passed his first test!

From that moment nothing was the same for Steve. Life at home remained the same, but life still changed. He discovered that not only could he learn, but he was good at it!

He discovered that he could understand and retain knowledge, and that he could translate the things he learned into his own life. Steve began to excel! And he continued this course throughout his school life.

After high-school Steve enlisted in the Navy, and he had a successful military career. During that time, he met the love of his life, he raised a family, and he graduated from college Magna Cum Laude. During his Naval career, he inspired many young people, who without him, might not have believed in themselves. Steve began a second career after the Navy, and he continues to inspire others, as an adjunct professor(副教授) in a nearby college。

Miss White left a great legacy. She saved one boy who has changed many lives. I know, because I am the love of his life.

You see, it’s simple, really. A change took place within the heart of one boy, all because of one teacher, who cared.

小题1:What does the underlined sentence in the first paragraph mean?

A.Steve would give up schooling forever.

B.Steve was at a loss about improving his study.

C.Being unhappy both in school and at home, Steve intended to end his own life.

D.Due to his poor study, Steve was about to be expelled from his school.小题2:What made Steve change greatly all of a sudden?

A.Miss White’s encouragement

B.Miss White’s praise

C.knowing Miss White concerned him

D.Miss White’s persuasion小题3:What might be the best title for this passage?

A.A boy loves his teacher

B.The difference a teacher can make

C.A great teacher

D.Please care about your students

题型:选择题

属于囊内韧带的是()

A.前交叉韧带

B.内侧韧带

C.喙肩韧带

D.分歧韧带

E.桡骨环状韧带

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