Charlie studied in a famous college for four years． He studied hard and did well in all his subjects． He hoped to become a good teacher． This year he left the college and began to work in a middle school． He likes his students and is strict（严格的） with them． He does his best to make his classes lively and interesting．

One day he carefully explained a chemical reaction（反应） to the students of Grade 2 in the chemistry lab．

“Be careful， everyone，” he said loudly． “Before I make the experiment，there're twenty five atoms of carbon（碳原子），but after I finish it， there're twenty four atoms of carbon left！”

He stopped to watch the classroom and hoped his students would go on explaining it． But the young men looked at each other and nobody answered him． He had to ask， “What happens？ What makes the atom lost？”

The classroom was very quiet and none of the students looked at their teacher．

“Who can tell us where it has gone？”

Suddenly a soft voice came from the back row， “We did not see anybody leave the lab！”

1．Charlie began to work in the middle school because ＿＿＿＿＿＿＿．

A．he had been in the school for four years　 B．he couldn't do anything except teaching

C．he hoped to become a good teacher　　　 D．he did well in all his subjects

2．Charlie hopes ＿＿＿ ，so he does his best to make his classes lively and interesting．

A．all his students could understand him　　 B．his students wouldn't be afraid of him

C．his students carefully watched him making the experiment

D．his students could do well in chemistry

3．That day Charlie wished ＿＿＿＿＿＿＿ ．

A．his students could learn the chemical reaction

B．his students could find the atom of carbon

C．his students could count（数） the atoms of carbon

D．his students could make the experiment

4．The students couldn't answer Charlie's questions because ＿＿＿＿＿＿＿ ．

A．none of them had seen the atoms　　　　　 B．they didn't understand their teacher

C．the chemical reaction was too complicated　 D．they all wanted to drop the subject

5．In fact，＿＿＿＿＿＿＿ ．

A．Charlie failed that day　 B．the student in the back row didn't watch her teacher carefully

C．the student in the back row hadn't learned chemistry before

D．Charlie failed in making the experiment

Charlie studied in a famous college for four years． He studied hard and did well in all his subjects． He hoped to become a good teacher． This year he left the college and began to work in a middle school． He likes his students and is strict（严格的） with them． He does his best to make his classes lively and interesting．

One day he carefully explained a chemical reaction（反应） to the students of Grade 2 in the chemistry lab．

“Be careful， everyone，” he said loudly． “Before I make the experiment，there're twenty five atoms of carbon（碳原子），but after I finish it， there're twenty four atoms of carbon left！”

He stopped to watch the classroom and hoped his students would go on explaining it． But the young men looked at each other and nobody answered him． He had to ask， “What happens？ What makes the atom lost？”

The classroom was very quiet and none of the students looked at their teacher．

“Who can tell us where it has gone？”

Suddenly a soft voice came from the back row， “We did not see anybody leave the lab！”

1．Charlie began to work in the middle school because ＿＿＿＿＿＿＿．

A．he had been in the school for four years　 B．he couldn't do anything except teaching

C．he hoped to become a good teacher　　　 D．he did well in all his subjects

2．Charlie hopes ＿＿＿ ，so he does his best to make his classes lively and interesting．

A．all his students could understand him

B．his students wouldn't be afraid of him

C．his students carefully watched him making the experiment

D．his students could do well in chemistry

3．That day Charlie wished ＿＿＿＿＿＿＿ ．

A．his students could learn the chemical reaction

B．his students could find the atom of carbon

C．his students could count（数） the atoms of carbon

D．his students could make the experiment

4．The students couldn't answer Charlie's questions because ＿＿＿＿＿＿＿ ．

A．none of them had seen the atoms　　　 B．they didn't understand their teacher

C. the chemical reaction was too complicated D.they all wanted to drop the subject

5．In fact，＿＿＿＿＿＿＿ ．

A．Charlie failed that day

B．the student in the back row didn't watch her teacher carefully

C．the student in the back row hadn't learned chemistry before

D．Charlie failed in making the experiment

B
When I was a boy, my father told me that he could do anything he wanted to. Dad said that he wanted to be the first to develop color prints in our city. And so he did.
When I was 16，Dad looked closely at the violin I played and announced that he want to make one. He read about violinmaking，and then became a violinmaker at the age of 43. He bought the tools and materials，opened a small store and set Mom up as the shopkeeper，while he worked at a local company. He retired from the company 17 years later and continued to make violins and other instruments.
Dad often guessed why the Stradivarius violins sound so beautiful. Some experts claimed that it was the unique varnish(油漆)that gave those instruments their beautiful sound. Dad argued that chemists could analyze the varnish—if that were the answer.
One of Dad’s friends asked him once which kind of wood was used to make violins. When Dad explained that the top was made of spruce(云杉)，his friend said that he had an old piece of spruce Dad might be interested in.
He worked for the next 12 months making a violin from the wood that his friend had given him. It proved to be a superior violin and it would become Dad’s masterpiece. He was convinced that the secret of the Stradivarius sound was in the wood itself.
Later，the instrument was stolen. Dad’s spirit was broken by the robbery, and he stopped making instruments. But he kept the music shop until he was 80 years old, selling guitars and violins.
My father has been gone for 14 years now. The violin has been missing for more than 25 years. Somewhere a musician is playing a late-20th-century violin with an excellent tone. The owner today may never understand why this ordinary-looking violin sounds so much like Stradivarius.    
45. The author mentions his father’s developing color prints____________.
A. to show that his father’s real interest was not in making violins
B. to prove that his father could do anything he wanted to
C. to give an example proving that his father was an inventor
D. to describe the real thing that made the author believe his father
46. What did the author's father think about Stradivarius violins?
A. The varnish was different from the others.
B. The way of making them was special.
C. The wood of the violins was special.
D. They could only be analyzed by chemists.
47. From the underlined sentence, we can learn that the author’s father________.
A. 1iked the violin very much
B. got crazy after this happened
C. 1ost interest in instruments
D. didn't want to become famous
48. We can infer from the last paragraph that the author __________ .
A. really hates the thief
B. misses his father a 1ot
C. really wants to play the violin
D. wonders who’s playing the violin now

Once there was a piano player in a bar. People came just to hear him play. But one night, a lady asked him to sing a song.
"I don't sing." said the man.
But the lady told the waiter, "I'm tired of listening to the piano. I want the player to sing!"
The waiter shouted across the room, " Hey, friend! If you want to get paid, sing a song!"
So he did. He had never sung in public before. Now he was singing for the very first time! Nobody had ever heard the song Mona Lisa sung so beautifully!
He had talent (天赋）he was sitting on! He may have lived the rest of his life as a no-name piano player in a no-name bar. But once he found, by accident, that he could sing well, he went on working hard and became one of the best-known singers in the US. His name was Nat King Cole.
You, too, have skills and abilities. You may not feel that your talent is great, but it may be better than you think. With hard work, most skills skills can be improved. Besides, you may have no success at all if you just sit on your talent.
【小题1】The lady asked the player to sing a song because          .

There are many colors in nature. But do you know if a color has weight? I think you’ll say “no”. But I am afraid you are wrong. If you don’t believe, you may do a small experiment.
First, put two objects（物体） with the same weight into two boxes. Then cover the box. Third, wrap(裹) one box with a red piece of paper, the other with a white piece of paper. OK. Now hold the boxes with your hand one by one. It is certain that you will think the red one is a little heavier.
Why do you think so? A scientist found that different colors have different weights in a man’s mind. So he did many tests and at last he got the result. That is to say, every color has its own weight in our mind and their order is the same. The heaviest color is red, then blue, green, yellow and white.
The scientist told us that colors also have smell. Can you smell the color? Of course not. Then why did the scientist say so? That is because every color stands for (代表)a kind of light with a certain wavelength(波长). It reaches our brain through sense organs(感觉器官).
According to this discovery, scientists say that people accept the colors they like, and refuse the colors they hate. So your body and mind will be healthy by using the colors you like. Or you’ll be nervous or ill. For example, if you stay in a room with red windows, wallpapers and furniture for two hours, you’ll feel you have been there for four hours. But if the room is blue, you’ll feel you have been there for only an hour. Another example, if a person walks out of a red room and into a blue room, his temperature will fall. That means our body temperature will change with different colors.
【小题1】The idea of the second paragraph is to tell us ________.