52．What could be a good thing about food that is genetically engineered?

       A．It’s more expensive.                           B．It could taste different. 

       C．It requires less insecticide.                   D．It’s not labeled in the supermarket. 

Sugar―free beets that still taste sweet, tastier tomatoes and brighter―colored fruits and vegetables that stay ripe（熟的）longer are all foods that are being grown now. How can they

carry traits, such as being tastier, brighter, and riper? They are genetically engineered. 

Genetic engineering（基因工程）is like making a change in a recipe. For example, when you make cakes, you mix together all of the usual ingredients. If you add an extra ingredient, like salt, the cakes will taste differently. 

Genes are ingredients in the recipe for life. They carry the traits of living things. Your genes dictate what color hair and eyes you’ll have, how tall you’ll be, as well as many other traits. Genes carry traits for plants, too. By adding genes to a plant, you can sometimes create new traits. For example, adding a certain gene to a potato plant can make the potato plant distasteful to bugs（虫子）. This makes some farmers happy because they don’t have to use chemicals to keep bugs away from their plants. 

It sounds great, but some people are opposed to the idea of food that is genetically engineered. Ronnie Cummins, from the Campaign for Food Safety, is against it. He says that one of the major concerns is allergies（过敏）. Supermarkets don’t always label foods that are genetically engineered. A customer could unknowingly buy food that has an added gene from another plant that he or she is allergic to. It could be dangerous. 

Gary Burton from Monsanto, a seed（种子）company that engineers food, disagrees. He says his company tests for allergies. Burton believes that genetic engineering is a valuable tool for making better food. The technology can help farmers use less insecticide（杀虫剂）and grow healthier crops. Burton thinks there are many advantages. 

But Cummins says that we just don’t know what will happen in the future if we keep adding genes to foods. We could mistakenly create a monster. 

People have different opinions about genetic engineering. One side supports it and thinks it will only help us. The other side is opposed to playing with nature and fears health risks. Which side do you think is right?

51．The underlined word “rejected” means          .

       A．refused            B．accepted           C．annoyed             D．frightened

C

50．What is the passage mainly about?

       A．The writer missed her high school life very much. 

       B．The writer learned lots of life lessons from Profe. 

       C．Profe helped the writer deal with difficulties. 

       D．Profe was good at teaching language. 

49．Which of the following is NOT true?

       A．The writer could speak very good Spanish. 

B．Profe spent a lot of time with his students. 

       C．The writer enjoyed Profe’s classes very much. 

       D．Profe and the writer stay in touch through e-mail now. 

48．Profe was a teacher of            .

       A．English            B．German            C．French               D．Spanish

47．Last year Tony went            .

       A．swimming          B．dancing              C．rock-climbing     D．hiking

B

My Daddy on Campus

Ⅰwas late on my first day of high school. My next class, Spanish, scared me. As the second bell rang in the hallway, I ran to the door of the classroom. 

At the door, a hand reached out and shook mine firmly. I looked up. A man smiled and introduced himself as Profe, which means teacher or professor in Spanish. Right away, his warm smile and welcoming words eased my fears. I enjoyed his classes a great deal because I learned more than just Spanish.   

I admit I only speak a little Spanish. But I try to live out the life lessons I learned from Profe every day.

“Everyone is worth your time. ”

Profe stood outside his classroom door every day before and after class. During lunch,  his room was always filled with students. He would stay after school to listen to and chat with students. He taught me that every person is special. 

“Don’t fear the difficulties.”

One time, I ran into his class crying. My friends had rejected me, and I wasn’t even sure why they always left me alone. Profe told me, “Linda, life gives you ashes（灰尘）. But learning its lessons will turn those ashes to jewels. The hard stuff will help you become a better person.” Ⅰ learned to look at my troubles differently because I know I’ll grow in difficult times. 

A year ago. I visited my old high school hoping to see Profe. But he had retired. My high school helped me contact him. Now we stay in touch through e-mail. The author William Arthur Ward wrote: “The ordinary teacher tells. The good teacher explains. The superior teacher shows.  The great teacher inspires. ” Thank you, Profe, for inspiring me.

46．Who likes Science Fair best?

       A．Paul.                 B．Mary.                C．Tony.                 D．Jenny. 

45．What’s Jenny’s favourite school event?

       A．School Olympics.                              B．Science Fair. 

       C．School Camping.                               D．School Party. 

45．What’s Jenny’s favourite school event?

       A．School Olympics.  B．Science Fair.  C．School Camping.  D．School Party