2-2
https://quizlet.com/tw/670271211/%E5%8D%97%E4%B8%80%E5%9C%8B%E5%B0%8F%E7%A4%BE%E6%9C%833%E4%B8%8Bch2-2-flash-cards/?i=1u0hyk&x=1jqt
2-1
https://quizlet.com/tw/670269871/%E5%8D%97%E4%B8%80%E5%9C%8B%E5%B0%8F%E7%A4%BE%E6%9C%833%E4%B8%8Bch2-1-flash-cards/?i=1u0hyk&x=1jqt
