陈曦在观察提琴、吉他、二胡等弦乐器的弦振动时，猜测：即使在弦张紧程度相同的条件下，发声的音调还可能与弦的粗细、长短及弦的

I don'like chenxi

上午2点和像雨点般落下存在降下这里我们公亩阿特十字路口
再一次你兹就起作用自我你兹就如此混淆你罐t拼凑你的介意存在这个意味着向是你兹就问自我但是仅有爱罐发言权请尝试再次金色步行在客方场地的比赛但是i相信为你和自我晒太阳意愿闪光一天如此i仅仅演奏我的分开祈祷你ll富人a改变的心脏但是i罐制造你注意到它通过那个s某样东西仅有爱罐社交聚会 在朝派你的arms某样的人破晓存在破碎面对面和一千英里分开我ve请尝试我最好的祝愿向制造你注意到那里s希望超出疼条件我们让步足够条件我们学习向信任但是仅有爱罐发言权请尝试再次金色步行在客方场地的比赛但是i相信为你和自我晒太阳意愿闪光一天如此i仅仅演奏我的分开祈祷你ll富人a改变的心脏但是i罐制造你注意到它通过那个s某样东西仅有爱罐社交聚会 我知道条件我是罐裁决words向触摸你深处内部你ll让步我的梦仅仅还有一机会向出租这个是我们持续再见但是仅有爱罐发言权请尝试再次金色步行在客方场地的比赛

Dear Li Fang:
I hope you can understand what I have done in exam.I'm in a low spirit after you ignore me.
It would have negative influence on our study, but for I had refused you.To begin with,copying others' answer means cheating in the exam.what's more, we would suffer in a guilty of cheating teachers and ourselves.Last but not least ,Copying the answers is a kind of our own irresponsible behavior.
It's high time that we attached great importance to the studies.There are several suggestions taking into account. For one thing, we should review what we have learned regularly to strengthen our knowledge. For another,we should develop our interests in studies. What we should keep in mind is that only we try our best to learn will we realize our dreams and live up to our parents expectations.
Your Sincerely
Chen Xi