问题
单项选择题
提高畜牧业的效益，指的是提高（）
A.经济效益
B.社会效益
C.生态效益
D.经济、社会、生态效益
答案
参考答案：D
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提高畜牧业的效益，指的是提高（）
A.经济效益
B.社会效益
C.生态效益
D.经济、社会、生态效益
参考答案：D
I sat down to read under an old tree in the park. I felt my life was 36 , for my whole world was dark. A young boy ran up to me, out of breath. He stood 37 before me with his head down and said 38 , “Look what I found!” In his hand was a flower, and what a poor sight! The flower was dry and 39 . I gave him a small smile and then turned my eyes away so that he could take his dry flower and go off to play. 40 , he sat next to my side and placed the flower to his 41 and said in surprise, “It smells sweet and it’s beautiful, too. That’s 42 I picked it. Here, it’s for you. ” The flower before me was dead. But I knew I must 43 it, or he might never leave. So I accepted the flower, and replied, “This is just what I 44 . ” Just then, for the first time I noticed that the boy could not 45 —he was blind. Tears (眼泪) came down my face as I 46 him for picking the best one. “You’re welcome. ” he smiled, and then ran off to 47 . I sat there and wondered how he was able to learn about my pain (痛苦). Through the eyes of a blind child, 48 I could see the problem was not with the world; the problem was me. And for all those years I myself had been 49 . I decided to see the beauty in life, and 50 every second of my life. And then I held that dry flower up to my nose and breathed in the smell of a beautiful rose.
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