题目内容
许多科学家在物理学发展过程中作出了重要的贡献，下列叙述中符合物理学史实的是| A．牛顿提出了万有引力定律，并通过实验测出了万有引力常量 |
| B．奥斯特发现了电流的磁效应，总结出了电磁感应定律 |
| C．库仑在前人研究的基础上，通过扭秤实验研究得出了库仑定律 |
| D．哥白尼提出了日心说并发现了行星沿椭圆轨道运行的规律 |
C解析:
略
略
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在物理学发展的过程中，许多物理学家的科学发现推动了人类历史的进步。以下叙述中，正确的说法是
| A．哥白尼创立地心说 |
| B．相对论的创立表明经典物理学已不再适用 |
| C．卡文迪许建立了行星运动定律 |
| D．牛顿总结出牛顿运动定律和万有引力定律，建立完整的经典力学体系 |
“Wanted: Violin. Can’t pay much. Call…”
That advertisement in the newspaper made me remember my childhood. I, too, had wanted a violin, but we didn’t have the money. Even though times were 16 , I couldn’t wait any longer to ask. “Daddy, may I have a violin of 17 ?” Daddy’s face looked 18 . But a few weeks later, Daddy went home, with a case in his hand, 19 ,“Mary, I found this secondhand violin for seven dollars.”
The day when I carried my violin to school for my first lesson , no one could know how 20 I was. I practiced, joined the school orchestra(管弦乐队), gave performances……Several years seemed to run even quickly and I found myself in the first violin chair. More years 21 , and my violin made every move with me, until one day, I carefully 22 it away.
Now here 23 this want advertisement, I discovered the case deep in my closet（储藏室）. I put it on the table. Then I picked up the 24 , walked to the telephone and called by the 25 .
Later in the day, a man of about 30 knocked at the door. “I’ve been expecting someone would 26 my advertisement. My daughter wants a violin so 27 ,”he said, examining my violin. “How much are you asking?”
I said, “Seven dollars.” “Are you sure?” he asked, 28 he did not believe his ears. “Seven dollars.” I 29 and then added,” I hope your little girl will enjoy it 30 I did.”
I smiled, but I found my tears(眼泪) rolling down my face.
That advertisement in the newspaper made me remember my childhood. I, too, had wanted a violin, but we didn’t have the money. Even though times were 16 , I couldn’t wait any longer to ask. “Daddy, may I have a violin of 17 ?” Daddy’s face looked 18 . But a few weeks later, Daddy went home, with a case in his hand, 19 ,“Mary, I found this secondhand violin for seven dollars.”
The day when I carried my violin to school for my first lesson , no one could know how 20 I was. I practiced, joined the school orchestra(管弦乐队), gave performances……Several years seemed to run even quickly and I found myself in the first violin chair. More years 21 , and my violin made every move with me, until one day, I carefully 22 it away.
Now here 23 this want advertisement, I discovered the case deep in my closet（储藏室）. I put it on the table. Then I picked up the 24 , walked to the telephone and called by the 25 .
Later in the day, a man of about 30 knocked at the door. “I’ve been expecting someone would 26 my advertisement. My daughter wants a violin so 27 ,”he said, examining my violin. “How much are you asking?”
I said, “Seven dollars.” “Are you sure?” he asked, 28 he did not believe his ears. “Seven dollars.” I 29 and then added,” I hope your little girl will enjoy it 30 I did.”
I smiled, but I found my tears(眼泪) rolling down my face.
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-- Dad, it's such a long way from our home to the park!
-- You mean it's ______ to take a taxi?
-- You mean it's ______ to take a taxi?
| A．popular | B．necessary | C．possible | D．important |
I'm wondering _________ Liu Xiang will have time to_________ the meeting.
| A．whether;attend | B．that;attend |
| C．whether;appear | D．that;appear |
Jin Yong is one of the greatest and oldest _________ writers. He is still_________.
| A．living; alive | B．living; living | C．alive; living | D．alive; alive |
As soon as the man walked into the room ~
he ______ his heavy coat and sat down.
he ______ his heavy coat and sat down.
| A．took away | B．took down |
| C．took off | D．took up |
There are so many kinds of Mp3 in the shop. We can’t decide ________ .
| A．what to buy | B．to buy what | C．which to buy | D．to buy which |