问题
选择题
已知(x+3)2+ │3x+y+m│= 0中,y 为负数, 则m 的取值范围是 [ ]
A.m>9
B.m<9
C.m>-9
D.m<-9
答案
A
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已知(x+3)2+ │3x+y+m│= 0中,y 为负数, 则m 的取值范围是 [ ]
A.m>9
B.m<9
C.m>-9
D.m<-9
A
"Who did this?" Mrs. Green asked with a piece of broken glass in her hand. She had never been so 51 with us. The classroom was so quiet. All students looked at the window except me. I kept my head 52 . I knew it was me. I broke it when I practiced 53 baseball. But should I tell the truth? If I did, I would be in trouble, I didn’t have enough 54 . How could I afford to buy such an expensive window? I really didn’t want to put up my hand, 55 at last I said. “I did it. I am sorry.” It was not 56 for me to say those words. Mrs. Green went to the book shelf and took down a book. Then she walked to me. Looking at 57 , I was a little afraid. To my surprise, she said, "I know you like 58 .Here is the book about them. It’s yours now. I give it to you not because you broke the window, but because you are 59 ." I couldn’t believe it. I wasn’t punished(惩罚). However, I was given my favorite book about birds. It happened 20 years ago, but I still 60 the book. The lesson my teacher taught me that day will be in my heart forever.
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