ղСվ
ҳ
С
п
߿
ɽ̴ѧ
Ӣѧϰ
Ա
ʦѧ
百度安全验证
ز鿴
Wordĵصַ
ļ.docΪ.docĶ
2014ʡ绯аи߿ѧģԾ(Ŀ)
ʦ41.8y=Asin(x+)ĺʡ̰
(1)
2018ţ꼶Unit3ܲԾ
¸Ӣٰ1A--UNIT-1----7
ͳѧϰҪ
ҵ淶
·ٻרʩ
2017ȫ߿Ӣ3500Ӣհ
繤ѧԾ()
п ֪ʶרר ѧ ˶ϰ