问题
单项选择题
热媒炉还设有（）气保护系统。
A.氮
B.氧气
C.氢气
D.空气
答案
参考答案：A
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热媒炉还设有（）气保护系统。
A.氮
B.氧气
C.氢气
D.空气
参考答案：A
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| A generation gap (代沟) has become a serious problem. I read a 1 about it in the newspaper. Some children killed themselves after quarrelling with 2 . I think this is because they don't often have a talk with each other. Parents now 3 more time in the office, 4 they don't have much time to stay with their children. As time passes, they both feel that they don't have the 5 topics (话题) to talk about. I want to tell parents to be more with your 6 , get to know them and 7 them. And for children, show your 8 to your parents. They are the people who love you. So 9 them your thoughts (想法). In this way, you 10 have a better understanding of each other. | ||||
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