A few degrees can make a big difference when it comes to food storage. Foods can go bad if they get too warm. But for many of the world’s poor, finding a good way to keep food cool is difficult. Refrigerators are costly and they need electricity.

       Yet spoiled food not only creates health risks but also economic losses. Farmers lose money when they have to throw away products that they can not sell quickly.

       But in 1995, a teacher in northern Nigeria named Mohammed Bath Abba found a solution. He developed the “Pot-in-Pot Preservation/Cooling System”. It uses two round containers made of clay. A smaller pot is placed inside a larger one.

       The space between the two pots is filled with wet sand. The inner pot can be filled with fruit, vegetables or drinks. A piece of wet cloth covers the whole cooling system.

       Food stored in the smaller pot is kept from spoiling through a simple evaporation (蒸发) process. Water in the sand between the two pots evaporates through the surface of the larger pot, where drier outside air is moving.

       The evaporation process creates a drop in temperature of several degrees. This cools the inner pot and helps keep food safe from harmful bacteria. Some foods can be kept fresh this way for several weeks.

       People throughout Nigeria began using the invention. And it became popular with farmers in other African countries. Mohammed Bah Abba personally financed (资助) the first five thousand pot-in-pot systems for his own community and five villages nearby.

       In 2000, the Rolex Watch Company of Switzerland honored him with the Rolex Award for Enterprise. This award recognizes people trying to develop projects aimed at improving human knowledge and well-being.

       A committee considers projects in science and medicine, technology, exploration and discovery, the environment and cultural history. Winners receive financial assistance to help develop and extend their projects.

       The award is given every two years. The next one will be given in 2008.

77. According to the text, why will the food in the inner pot not go bad?

       A. The temperature is lower than the outside.

       B. Both of the pots are made of clay.

       C. It is covered with a wet cloth.

       D. Drier air is moving outside the pots.

78. What makes foods go bad if they get too warm according to the text?

       A. The water in the food.                           B. The air around the food.

       C. The harmful bacteria.                           D. The writer doesn’t mention it.

79. Rolex Watch Company gave Mohammed Bah Abba an award because ______________ .

       A. he saved lots of energy like electricity

B. he made a contribution to common people

       C. he was more than a good teacher

       D. he made a great discovery in Africa

80. From the text we can infer this article was probably written in _______________.

       A. 1995                    B. 2000                    C. 2004                    D. 2007

A few degrees can make a big difference when it comes to food storage．Foods can go bad if they get too warm．But for many of the world’s poor, finding a good way to keep food cool is difficult．Refrigerators are costly and they need electricity．

       Yet spoiled food not only creates health risks but also economic losses．Farmers lose money when they have to throw away products that they cannot sell quickly．

       But in 1995, a teacher in northern Nigeria named Mohammed Bath Abba found a solution．He developed the “Pot-in-Pot Preservation/Cooling System．” It uses two round containers made of clay．A smaller pot is placed inside a larger one．

       The space between the two pots is filled with wet sand．The inner pot can be filled with fruit, vegetables or drinks．A piece of wet cloth covers the whole cooling system．

       Food stored in the smaller pot is kept from spoiling through a simple evaporation （蒸发） process．Water in the sand between the two pots evaporates through the surface of the larger pot, where drier outside air is moving．

       The evaporation process creates a drop in temperature of several degrees．This cools the inner pot and helps keep food safe from harmful bacteria．Some foods can be kept fresh this way for several weeks．

       People throughout Nigeria began using the invention．And it became popular with farmers in other African countries．Mohammed Bah Abba personally financed the first five thousand pot-in-pot systems for his own community and five villages nearby．

       In 2000, the Rolex Watch Company of Switzerland honored him with the Rolex Award for Enterprise．This award recognizes people trying to develop projects aimed at improving human knowledge and well-being．

       A committee considers projects in science and medicine, technology, exploration and discovery, the environment and cultural history．Winners receive financial assistance to help develop and extend their projects．

       The award is given every two years．The next one will be given in 2008．

1．According to the text, why will the food in the inner pot not go bad?

       A．The temperature is lower than the outside．

       B．Both of the pots are made of clay．

       C．It is covered with a wet cloth．

       D．Drier air is moving outside the pots．

2．What makes foods go bad if they get too warm according to the text?

       A．The water in the food．                                                                                      B．The air around the food．

       C．The harmful bacteria．                                                                                              D．The writer doesn’t mention it．

3．Rolex Watch Company gave Mohammed Bah Abba an award because _________ ．

       A．he saved lots of energy                                                                                        B．he made contribution to common people

       C．he was more than a good teacher

       D．he made a great discovery in Africa

4．From the text we can infer this article was probably written in _________．

       A．1995       B．1996          C．2000           D．2007

Many years ago my student asked me the question, "Mrs. Kindred, why do you teach?" Without taking time to reflect, I answered, "Because someday I might say something that might make a difference in someone's life." Even though I was sincere, that wasn't a very good answer and my student didn't let it slide.

"Let me get this straight," he said, "You went to college for four years so you could come here every day because you have the hope that someday you might say something that will influence someone?" He shook his head as if I were crazy and walked away looking confused. I'm one of those people who look back and wish they had said something smart or witty, or swift.

Even though that particular student might no longer wonder why I teach, there are days when I wonder. On those days, I remind myself of the real reasons I teach:

It's in my blood. My mother was my most influential teacher, and she was a 6th grade reading teacher until her death in 1990. She instilled(逐渐灌输) in me a love of reading and the knowledge that education opens doors.

Teaching is a way to make a difference. If you throw a stone in a pond the ripples go on and on until they reach the shore. You can't have ripples without a "stone." Good teachers throw stones that make a positive difference, and that's what I strive to do.

I genuinely love teenagers.

I want to share with others what I know and what I have learned through the years. Life is full of ups and downs, and if I can help students avoid some potholes on the road of life, I want to do so. If they'll allow me to celebrate their victories with them, I want to do too.

Teaching isn't for everyone, but I know I made the right career choice.

Why did the student continue to ask the question about the writer’s being a teacher?

  A. Because he thought her answer was unbelievable.

  B. Because the writer was insincere.

  C. Because the student was naughty.

  D. Because the answer was difficult to understand.

What do you think of the writer?

  A. Stupid.                       B. Honest.                    C. Conservative.                   D. Polite.

According to the text, which of the following is NOT true?

  A. The writer’s mother has the greatest influence on her.

  B. The writer’s answer made the student confused.

  C. In the writer’s opinion, some people in the world are unfit to teach.

  D. The writer annoyed the student who asked the question.

We can infer from the text that _________.

  A. the writer was also a good teacher in school

  B. the writer often plays with her students beside a pond

  C. the writer devotes herself to teaching and her students

  D. the writer often accompanies the students on their way home

Many years ago my student asked me the question, "Mrs. Kindred, why do you teach?" Without taking time to reflect, I answered, "Because someday I might say something that might make a difference in someone's life." Even though I was sincere, that wasn't a very good answer and my student didn't let it slide.

"Let me get this straight," he said, "You went to college for four years so you could come here every day because you have the hope that someday you might say something that will influence someone?" He shook his head as if I were crazy and walked away looking confused. I'm one of those people who look back and wish they had said something smart or witty, or swift.

Even though that particular student might no longer wonder why I teach, there are days when I wonder. On those days, I remind myself of the real reasons I teach:

It's in my blood. My mother was my most influential teacher, and she was a 6th grade reading teacher until her death in 1990. She instilled(逐渐灌输) in me a love of reading and the knowledge that education opens doors.

Teaching is a way to make a difference. If you throw a stone in a pond the ripples go on and on until they reach the shore. You can't have ripples without a "stone." Good teachers throw stones that make a positive difference, and that's what I strive to do.

I genuinely love teenagers. I want to share with others what I know and what I have learned through the years. Life is full of ups and downs, and if I can help students avoid some potholes on the road of life, I want to do so. If they'll allow me to celebrate their victories with them, I want to do too.

Teaching isn't for everyone, but I know I made the right career choice.

Why did the student continue to ask the question about the writer’s being a teacher?

  A. Because he thought her answer was unbelievable.  

  B. Because the writer was insincere.

  C. Because the student was naughty.                

D. Because the answer was difficult to understand.

What do you think of the writer?

  A. Stupid.                       B. Honest.                    C. Conservative.                   D. Polite.

According to the text, which of the following is NOT true?

  A. The writer’s mother has the greatest influence on her.

  B. The writer’s answer made the student confused.

  C. In the writer’s opinion, some people in the world are unfit to teach.

  D. The writer annoyed the student who asked the question.

We can infer from the text that _________.

  A. the writer was also a good teacher in school

  B. the writer often plays with her students beside a pond

  C. the writer devotes herself to teaching and her students

  D. the writer often accompanies the students on their way home

What’s the main idea of the text?

  A. A student’s silly question.                                 B. A good teacher who likes students.

  C. A confused student.                                          D. The reason why I teach.

Many years ago my student asked me the question, “Mrs. Kindred, why do you teach?” Without taking time to reflect, I answered, “Because someday I might say something that might make a difference in someone’s life.” Even though I was sincere, that wasn’t a very good answer and my student didn’t let it slide.

“Let me get this straight,” he said, “You went to college for four years so you could come here every day because you have the hope that someday you might say something that will influence someone?” He shook his head as if I were crazy and walked away looking confused. I’m one of those people who look back and wish they had said something smart or witty, or swift.

Even though that particular student might no longer wonder why I teach, there are days when I wonder. On those days, I remind myself of the real reasons I teach:

It’s in my blood. My mother was my most influential teacher, and she was a 6th grade reading teacher until her death in 1990. She instilled（逐渐灌输）in me a love of reading and the knowledge that education opens doors.

Teaching is a way to make a difference. If you throw a stone in a pond the ripples go on and on until they reach the shore. You can’t have ripples without a “stone.” Good teachers throw stones that make a positive difference, and that’s what I strive to do.

I genuinely love teenagers.

I want to share with others what I know and what I have learned through the years. Life is full of ups and downs, and if I can help students avoid some pot holes on the road of life, I want to do so. If they’ll allow me to celebrate their victories with them, I want to do so too.

Teaching isn’t for everyone, but I know I made the right career choice.

1．Why did the student continue to ask the question about the writer’s being a teacher?

A．Because he thought her answer was unbelievable.

B．Because the writer was insincere.

C．Because the student was naughty.

D．Because the answer was difficult to understand.

2．What do you think of the writer?

   A．Stupid.          B．Honest.       C．Conservative.      D．Polite.

3．According to the text, which of the following is NOT true?

   A．The writer’s mother has the greatest influence on her .

B．The writer’s answer made the student confused.

C．In the writer’s opinion, some people in the world are unfit to teach.

D．The writer made the student who asked the question angry.

4．We can infer from the text that         .

   A．the writer was also a good teacher in school.

B．the writer often plays with her students beside a pond.

C．the writer devotes herself to teaching and her students.

D．the writer often accompanies the students on their way home.

5．What is the main idea of the text?

   A．A student’s silly question.            B．A good teacher who likes students.

C．A confused student.               D．The reason why I teach.