口语能力标准
91. Chinatowns in the United States
2013-09-06
92. Elvis Presley
2013-09-06
93. Daily Exercise Leads to Better Health
2013-09-06
96. Taking Action to Care for the Elderly
2013-09-06
97. Texting while walking can be dangerous
2013-09-06
98. Walt Disney
2013-09-06
100. Bungee -- Just for the Thrill
2013-09-06