A.國(guó)家、語(yǔ)言或區(qū)位代碼 B.出版社代碼 C.書(shū)序碼 D.校驗(yàn)碼
A.20B.21C.22D.23
A.倫敦天氣 B.在英國(guó)的網(wǎng)站中查找倫敦的天氣信息 C.london weather site:hk D.london weather site:uk