题目内容
Did you ever wonder how some of your favorite foods, products or toys came about? Believe it or not, they may have been an accident, or a failure of some other intention. Below, we found three mistakes we're thankful for turned out to be what they are.
1. Most historians hold that the Chinese invented fireworks in the 9th century when they
discovered how to make gunpowder. Story has it that a Chinese cook accidentally mixed together what were then considered common kitchen items and noticed they burnt. When put tightly in a bamboo tube and lit, it blew up.
2. In May of 1886, a law led John Pemberton, a pharmacist（药剂师）, to rewrite the formula(配方) for "Pemberton's French Wine Coca,” his popular headache treatment. Containing sugar instead of wine as a sweetener, the outcome became something for Coke, which was later mixed with carbonated water. His bookkeeper suggested the name Coca-Cola because he thought the two C’s would look good together, which is how what we call Coca-Cola, a world –wide drink came into being.
3. During World War II, scientists at the University of Birmingham invented the magnetron—an important heat-producing part of the microwave oven(微波炉). While working for Raytheon Corporation after the war, the American engineer Percy Spencer was testing the magnetron when a chocolate bar in his pocket melted. He went on to test other foods including popcorn kernels, and found it to be a much more efficient way to cook. In 1947 Raytheon came out with the first restaurant microwave oven, which was six feet tall and weighed 750 lbs.
45.The right time order of the three inventions, according to the passage, should be______.
A. fireworks, the microwave and Coca-Cola
B. fireworks ,Coca-Cola and the microwave
C. Coca-Cola , fireworks and the microwave
D. the microwave, Coca-Cola and fireworks
46.Percy Spencer found the microwave efficient in cooking when he was _______
A. looking for a way to melt his chocolate
B. trying to know how a magnetron could cook
C. working to know how the magnetron works
D. asked to invent a restaurant microwave oven
47. What can we learn from the above invention stories?
A. Experiments make great inventors of our time.
B. Nothing is impossible if one tries each day.
C. Inventors come out of hard work at any time.
D. A small incident may lead to a great invention.
48.What’s the best title for the passage?
A. What great inventions they are! B. Inventions from Three Countries.
C. Stories of Accidental Inventions. D. The Human Inventions of time.
【小题1】B
【小题2】C
【小题3】D
【小题4】C
天天向上一本好卷系列答案
小学生10分钟应用题系列答案Mark was walking home from school one day when he saw the boy in front of him fall over and drop all of the book
s he was carrying, along with two sweaters, a basketball and a walkman（随身听）. Mark stopped and helped the boy pick up these things. Since they were going the same way, he helped to carry some of his things. As they walked, Mark knew that the boy’s name was Bill, that he loved computer games, basketball and history, and that he was having lots of troubles with his other subjects and that he had just broken up with his girlfriend.
They arrived at Bill’s home first and Mark was invited in for a Coke and to watch some television. The afternoon passed happily with a few laughs and some small talk, and then Mark went home. They often saw each other at school, had lunch together once or twice, and then they both finished middle school. They ended up in the same high school where they sometimes saw and talked with each other over the years. At last just three weeks before they finished high school, Bill asked Mark if they could talk.
Bill asked Mark if he still remembered the day years ago when they had first met. “Did you ever think why I was carrying so many things home that day?” asked Bill. “You see, I cleaned out my locker(锁柜) because I didn’t want to leave anything for anyone else. I had put away some of my mother’s sleeping pills and I was going home to kill myself. But after we spent some time together talking and laughing, I began to 
understand that if I killed myself, I would have missed that time and so many others that might follow. So you see, Mark, when you picked up those books that day, you did a lot more. You saved my life.”
【小题1】When Mark met him the first time, Bill was going _______.
| A．to have a basketball game | B．to his classroom |
| C．to see Mark | D．back home |
| A．was a good student | B．liked sports and music |
| C．liked all the subjects in school | D．was a good friend |
| A．were in the same middle school and high school |
| B．were in the same middle school but not in the same high school |
| C．often had lunch together at school |
| D．had known each other before they began to study in middle school |
| A．相处很好 | B．和好如初 | C．关系破裂 | D．保持联系 |
| A．knew he could save Bill’s life |
| B．knew who Bill was and wanted to help him |
| C．didn’t know why he was going to help him |
| D．didn’t know what he was doing was very important to Bill |
We can achieve knowledge either actively or passively（被动地）. We achieve it actively by direct experience, by testing and proving an idea, or by reasoning.
We achieve knowledge passively by being told by someone else. Most of the learning that takes place in the classroom and the kind that happens when we watch TV or read newspapers or magazines is passive. Conditioned as we are to passive learning, it’s not surprising that we depend on it in our everyday communication with friends and co-workers·
Unfortunately, passive learning has a serious problem. It makes us tend to accept what we are told even when it is little more than hearsay and rumor（谣言）.
Did you ever play the game Rumor? It begins when one person writes down a message but doesn’t show it to anyone. Then the person whispers it, word for word, to another person. That person, in turn, whispers it to still another, and so on, through all the people playing the game. The last person writes down the message word for word as he or she hears it. Then the two written statements are compared Typically, the original message has changed.
That’s what happens in daily life. The simple fact that people repeat a story in their own words changes the story. Then, too, most people listen imperfectly. And many enjoy adding their own creative touch to a story, trying to improve on it, stamping（打上标记）it with their own personal style. Yet those who hear it think they know.
This process is also found among scholars and authors：A statement of opinion by one writer may be re-stated as fact by another, who may in turn be quoted（引用）by yet another; and this process may continue, unless it occurs to someone to question the facts on which the original writer based his opinion or to challenge the interpretation he placed upon those facts.
【小题1】According to the passage, passive learning may occur in______________.
| A．doing a medical experiment | B．solving a math problem |
| C．visiting an exhibition | D．doing scientific reasoning |
| A．active learning | B．knowledge |
| C．communication | D．passive learning |
| A．a message may be changed when being passed on |
| B．a message should be delivered in different ways |
| C．people may have problems with their sense of hearing |
| D．people tend not to believe in what they know as rumor |
| A．Active learning is less important. |
| B．Passive learning may not be reliable. |
| C．Active learning occurs more frequently. |
| D．Passive learning is not found among scholars. |