题干

某公司准备在甲乙两种复印机中选购一台,甲复印机的购置成本为22000元,乙为18000元;甲的专用耗材每年消耗量不及乙的50%。该公司最终购买了甲复印机。如果不考虑其他因素,这一选择的理由是(   )

A:甲乙是替代品,甲的耗材消耗量低于乙

B:甲与其耗材是互补品,甲的耗材成本低于乙的购置成本

C:甲与乙的耗材是互补品,甲的购置成本低于乙的耗材成本

D:甲乙是替代品,甲多耗材的购置成本低于甲节约的耗材成本

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D

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     As a music teacher, I have always known that music touches the soul. It can 1 all kinds of barriers to reach students in a very special way. It can be the2for each child to find their light. I would like to3 a story about it.

       Fora few years I was4  with the opportunity to teach disabled students. One of my most5 students was a five­year­old girl called Vanessa, who had difficulty walking, and could not speak. We6 sat on the floor for our music lessons and Vanessa liked to7 on my lap (膝盖). One of her favorite songs was “John the Rabbit” . It was a call and response song where I sang the call and the students 8 twice while singing the repeating phrase, “Oh, yes!” Vanessa liked to 9her hands together with mine and clap with me. We probably performed that song during every class, Vanessa and I clapping together. But she 10 said or sang a word.

         One day, when the song was finished, Vanessa turned around, 11me in the eye, clapped her tiny hands twice and said the words “Oh, yes!” I opened my mouth in12and for that moment I was the one who could not speak. When my heart13started beating again I looked over at the assistant teacher to find her also14. Through music we had made an awesome connection.

        Several years later, I met Vanessa on the street in town. She waved with a big 15on her face and then clapped her hands twice, imitating the song we had 16so many times in our music class. The little girl,17 her connection with music, left an impression on me that will last forever. Every child has the 18 to learn and grow. It is up to us to19 the way to teach each and every one of our students. We all must find each child's 20.