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cao và cân nặng cơ quan sinh dục bắt đầu phát triển, con gái xuất hiện kinh nguyệt, con trai có hiện tượng xuất tinh Đồng thời ở giai đoạn... đồng là đồng rất bền, dễ dát mỏng và kéo thành sợi, có thể đập và uốn thành bất kì hình dạng nào Đồng có màu đỏ nâu, có ánh kim, dẫn nhiệt và dẫn điện tốt Câu 5. ( 2 điểm) Khoanh vào ý : 5. 1, c thép 5. 2, a tơ sợi  . 0<E&?+#+FD/I3%H+=>&?( AW!;<''i LDh'x+8''l+[-Z9'DE"aE8'k'f' +8';0"aEgFG'lFK AW!;<''.i LDh'a;j#<#EF'f#$JEj=yEF z'w"F'8'D+PF9% AW(j9uF"G# 5 #)67^C#J9VQ;E 5 k'f'-Eg-Ui) $)2V7' 95 9'DF;0"U.i) 2I# 95 "aEa'lFKU.i) 2Vl 95 8'U.i)  . &.B3&D/ <E-&./  01/J=BK#3&./( tFGXFX=7FlF'$Ed"%cae `.?Y#'.`=Fl9d67;+-=h'0%?e 0LM%3 {D"!'b#';EJ Vmnmo 68 5 ='JL> 5 . n 5` = 1/J>&? AW($E"<'&3Fl$E=vE'l|+8'#;_ &!'.i o=A=#=*;_&!(9iUN;_#'%'#9 7;) o=AW=+8'#;_&!'($E"+8'l|f=O !(9=.i LM%3=>&?( AW=j$EuF<'$%}Uq$Eb$E+=$E);v E'l;liJjwC#pp'lFF'1'9^ b<'X'bK#$E'.i #)6q$E 5 i A'>Jj'|! $)b$E 5 i AW!uF7F'# 5 !'Fl(]!Fl7'F^#3u'f# !'Fl(;xFl7' F'+!AW$=y1}'9^biJwC#ppQX;X =G$iil'!. &.B3&D/ <E-&./  01/J=BK#3&./( tFGXFX=7FlF'$Ed"%cae `.?Y#'.`=Fl9d67;+-=h'0%?e 0LM%3 {D"!'b#';EJ Vmnmo 68 5 ='JL> 5 . n 5` = 1/J>&? AW($E"<'&3Fl$E=vE'l|+8'#;_ &!'.i o=A=#=*;_&!(9iUN;_#'%'#9 7;) o=AW=+8'#;_&!'($E"+8'l|f=O !(9=.i LM%3=>&?( AW=j$EuF<'$%}Uq$Eb$E+=$E);v E'l;liJjwC#pp'lFF'1'9^ b<'X'bK#$E'.i #)6q$E 5 i A'>Jj'|! $)b$E 5 i AW!uF7F'# 5 !'Fl(]!Fl7'F^#3u'f# !'Fl(;xFl7' F'+!AW$=y1}'9^biJwC#ppQX;X =G$iil'!