2. Book II Applicable Areas of China: Gansu, Qinghai, Heilongjiang, Jilin, Liaoning, Ningxia, Xinjiang, Inner Mongolia, Shaanxi and Chongqing.
3. Applicable areas of the three volumes in China: Yunnan, Sichuan, Guangxi, Guizhou and Tibet.
1, the national volume is the most difficult.
2. The difficulty of the second volume follows that of the national volume.
3, the national three volumes are considered to be the simplest.
1, English listening in the national paper is the most difficult.
2. Secondly, the listening difficulty of English in National Volume 2 is the second.
3. China English listening three volumes is the easiest.