Guidance Subject: primary and secondary language, English, Mathematics, Physics, Chemistry.
辅导科目：中小学语文、英语、数学，中学物理、化学。
In order to use primary source in our research we have to think specifically on our subject and its target.
主要来源是被认为是最可靠的研究和验证的信息来源。
In my Chinese primary school, Chinese calligraphy was an academic subject.
在中国上小学时，书法被单独的设置为一门课。
Describe your favorite subject when you were in primary school.
描述你最爱好的科目，当你在小学。
In order to use primary source in our research we have to think specifically on our subject and its target.
第一手来源是被认为是最可靠的研究和验证的信息来源。
In order to use primary source in our research we have to think specifically on our subject and its target.
第一手来源是被认为是最可靠的研究和验证的信息来源。
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