问题
单项选择题
正常使用极限状态与承载能力极限状态相比（）。
A、允许出现的概率高些
B、出现概率相同
C、失效概率小些
D、失效概率大些
答案
参考答案：A
搜题请搜索小程序“爱下问搜题”
正常使用极限状态与承载能力极限状态相比（）。
A、允许出现的概率高些
B、出现概率相同
C、失效概率小些
D、失效概率大些
参考答案：A
A true friend is always helpful. I didn’t believe it one thing happened to me when I was in Grade 7. Li Jie was one of my classmates. He and I were also neighbours. He always listened to his mother I didn’t like listening to my mother. I didn’t think it was necessary for to teach me anything. Li Jie knew all about that but he said to me. One weekend, Li Jie invited me to watch a film. I liked films very much so I went to the with him happily. The film was about the love between a and her son. After watching it, I began to know how great the love of the mother was. I felt that I didn’t listen to my mother before. I decided to think more about my mother than about . After I told that to him, Li Jie smiled and said, “It’s really necessary for you to watch such a film. That was a good choice (选择) for both you and me.” Suddenly, I knew he invited me to watch the film. Just at that time, I knew a true friend is always .
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