P47 16-1 I. ch 发/tS/或/k/的单词 I. ch 发/tS/或/k/的单词 P48 16-2 II. ph发/f/，ture发/tSE/的单词 II. ph发/f/，ture发/tSE/的单词 P48 16-3 III. 奇想法 III. 奇想法 P49 16-4 I. Listen and number. I. Listen and number.