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【单选题】
地方官三顿饭个三地方官三顿饭个斯蒂芬是地方官三顿饭个斯蒂芬A.
三地方官三顿饭个df
B.
公司的风格大哥
C.
地方归属地分公司df
D.
分公司地方刚性兑付
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举一反三
【简答题】（10分） 1 mol仅含C、H、O三种元素的有机物A在稀硫酸中水解生成1 molB和1 molC。B分子中 N (C)∶ N (H)＝4∶5，135＜ M r(B)＜140；C与B分子中C原子数相同，且 M r(B)＝ M r(C)＋2。（1）C的分子式为 ，A的摩尔质量为 ； （2）B的分子具有高度对称性，苯环上的一氯取代物只有一种。B能与金属Na反应但不能与NaOH反应。写出B的结构简式 ；...
【简答题】Dear Aunty, After years of her crying, I finally gave in and allowed my daughter to have a cat. I now regret my decision. As someone needs to have a clean, tidy house, I no longer feel relaxed in my o...
【单选题】听力原文： One day my friend Jack and I were playing in the garden when I saw a cat in our big tree. It looked frightened and we thought it couldn't get down, so we climbed up to help it. We didn't have a ...
A.
Climbing the tree．
B.
Playing in the garden．
C.
Playing in the room．
【简答题】135=( )B=( )H
【单选题】--- My math teacher said I was too lazy. --- ______________. You should work harder.
A.
Good idea
B.
I’m sorry
C.
Good luck
D.
Have a great time
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