谁知道第二课分几个部分，还要写几个部分的段意，哥哥姐姐快帮帮我？

你能帮帮他们吗

• HgS中Hg和S的化合价

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• 方程2^x+x-2=0的解为x0,则（） A.X0∈(-无穷,0) B .X0∈(0,1) C.X0∈(1,2) D.X

  1年前

• 若x^2+x＝0,则|2x+1|＜1,写出所给命题的逆命题、否命题、逆否命题,并分别判断它们的真假

  1年前

• 铭铭今天上午7：00出家门去学校，走后5min妈妈发现她没带数学课本，立即骑车给铭铭送去，追上铭铭后又带她骑了10min

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• 为什么固相蒸气压小于液相蒸气压,液相就要向固相转化?

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精彩回答

• “____ I ask you a question ?” “____ you tell me the difference between the two words ? ”

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• She looks sad. Could you please tell me that prevents her from being as happy as before? [ ]

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• In modern society, people use money every day.

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• Walking after meals is ______. [ ]

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• Tom said he __________ back in a week.

  1年前