问题
填空题
抛物线 y=-x2+1 的开口向（ ）。
答案
下
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抛物线 y=-x2+1 的开口向（ ）。
下
A generation gap(代沟)has become a serious problem.! read a report about it in the newspaper. Some children have killed 31 after quarrelling (爭吵)with 32 .I think this is because they don't often have a talk with each other. Parents now 33 more time in the office, 34 they don't have much time to stay with their children. As time passes, they both feel that they don’t have the 35  topic(话题)to talk about. I want to tell parents to be more patient with your 36_，get to know them and 37 them. And for children, show your 38_to your parents. They are the people who love you. So 39 them your thoughts. In this way, you 40 have a better understanding of each other.
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