Unit One Campus Life (Ⅰ)·················· 001 Unit Two Family (Ⅰ)···················· 019 Unit Three Friendship (Ⅰ)················· 041 Unit Four Healthy Life (Ⅰ)················· 065 Unit Five Modern Technology (Ⅰ)·············· 085 Unit Six Citizenship (Ⅰ) ················· 107 Unit Seven Campus Life (Ⅱ)················· 127 Unit Eight Family (Ⅱ)··················· 149 Unit Nine Friendship (Ⅱ)·················· 173 Unit Ten Healthy Life (Ⅱ)················· 197 Unit Eleven Modern Technology (Ⅱ) ············· 217 Unit Twelve Citizenship (Ⅱ) ················ 237