以下是课程目录：
5_5 the Origin of the Pacific Island People题目精讲1-10
1.8 timberline vegetation on mountains题目精讲1-10
2.5 desert formation题目精讲1-10
9_3 reflection in teaching题目精讲11-14
11_3 ancient Egyptian sculpture题目精讲11-14
15_6 mass extinctions题目精讲11-14
9_6 colonizing the Americas via the northwest coast题目精讲11-14
12_6 transition to sound in film题目精讲11-14
11_2 ancient Egyptian sculpture题目精讲1-10
12_7 water in the desert话题难易度，重点词汇，难句解析
11_4 orientation and navigation话题难易度，重点词汇，难句解析
8_4 extinction of the dinosaurs话题难易度，重点词汇，难句解析
12_3 which hand did they use题目精讲11-14
1.7 timberline vegetation on mountains话题难易度，重点词汇，难句解析
10_2 Chinese pottery题目精讲1-10
10_3 Chinese pottery题目精讲11-14
4_2 Deer Populations of the Puget Sound题目精讲1-9
4_4 cave art in Europe话题难易度，重点词汇，难句解析
10_5 variations in the climate题目精讲1-10
14_5 Maya water problems题目精讲1-10
11_9 begging by nestlings题目精讲11-14
9_9 the arrival of plant life in Hawaii题目精讲11-14
8_7 running water on Mars话题难易度，重点词汇，难句解析
12_2 which hand did they use题目精讲1-10
7_5 Ancient Rome and Greece题目精讲1-10
15_3 a warm-blooded turtle题目精讲11-14
15_7 glacier formation话题难易度，重点词汇，难句解析
6_3 powering the industrial revolution题目精讲11-14
4_5 cave art in Europe题目精讲1-7
6_4 William Smith话题难易度，重点词汇，难句解析
9_8 the arrival of plant life in Hawaii题目精讲1-10
15_8 glacier formation题目精讲1-10
14_3 children and advertising题目精讲11-14
6_1 powering the industrial revolution话题难易度，重点词汇，难句解析
4_6 cave art in Europe题目精讲8-14
5_8 the Cambrian Explotion题目精讲1-10
3.5 Depletion of the Ogallala Aquifer题目精讲1-10
12_8 water in the desert题目精讲1-10
8_1 the Rise of Teotihuacan话题难易度，重点词汇，难句解析
12_9 water in the desert题目精讲11-14
8_6 extinction of the dinosaurs题目精讲11-14
11_7 begging by nestlings话题难易度，重点词汇，难句解析
2.7 early cinema话题难易度，重点词汇，难句解析
9_5 colonizing the Americas via the northwest coast题目精讲1-10
1.6 the origins of theatre题目精讲11-14
2.6 desert formation题目精讲11-14
13_3 types of social groups题目精讲11-14
11_8 begging by nestlings题目精讲1-10
5_3 minerals and plants题目精讲11-14
7_1 the geologic history of Mediterranean话题难易度，重点词汇，难句解析
2.2 the origins of cetaceans题目精讲1-10
7_4 Ancient Rome and Greece话题难易度，重点词汇，难句解析
5_4 the Origin of the Pacific Island People话题难易度，重点词汇，难句解析
8_3 the Rise of Teotihuacan题目精讲11-14
8_8 running water on Mar题目精讲1-10
4_8 petroleum resources题目精讲1-14
1.3 groundwater题目精讲11-14
15_5 mass extinctions题目精讲1-10
10_7 seventeenth-century European economic growth话题难易度，重点词汇，难句解
3.7 the long-term stability of ecosystems话题难易度，重点词汇，难句解析
5_9 the Cambrian Explotion题目精讲11-14
3.8 the long-term stability of ecosystems题目精讲1-4
6_7 infantile amnesia话题难易度，重点词汇，难句解析
8_9 running water on Mar题目精讲11-14
3.2 architecture 题目精讲1-8
4_3 Deer Populations of the Puget Sound题目精讲10-14
5_1 minerals and plants话题难易度，重点词汇，难句解析
13_2 types of social groups题目精讲1-10
1.2 groundwater题目精讲1-10
9_1 reflection in teaching话题难易度，重点词汇，难句解析
10_9 seventeenth-century European economic growth题目精讲11-14
7_3 the geologic history of Mediterranean题目精讲11-14
13_9 method of infant perception题目精讲11-14
7_2 the geologic history of Mediterranean题目精讲1-10
12_5 transition to sound in film题目精讲1-10
2.9 early cinema题目精讲11-14
3.6 Depletion of the Ogallala Aquifer题目精讲11-14
3.3 architecture 题目精讲9-14
11_1 ancient Egyptian sculpture话题难易度，重点词汇，难句解析
8_2 the Rise of Teotihuacan题目精讲1-10
3_9 the long-term stability of ecosystems题目精讲5-14
2.8 early cinema题目精讲1-10
14_7 pastoralism in ancient Inner Eurasia话题难易度，重点词汇，难句解析
11_6 orientation and navigation题目精讲11-14
5_2 minerals and plants题目精讲1-10
3.4 epletion of the Ogallala Aquifer话题难易度，重点词汇，难句解析
2.1 the origins of cetaceans话题难易度，重点词汇，难句解析
1.5 the origins of theatre题目精讲1-10
15_1 a warm-blooded turtle话题难易度，重点词汇，难句解析
10_6 variations in the climate题目精讲11-14
15_9 glacier formation题目精讲11-14
7_7 agriculture，iron and Bantu people话题难易度，重点词汇，难句解析
13_4 biological clocks话题难易度，重点词汇，难句解析【补充】
5_7 the Cambrian Explotion话题难易度，重点词汇，难句解析
7_8 agriculture，iron and Bantu people题目精讲1-10
6_2 powering the industrial revolution题目精讲1-10
1.1 groundwater话题难易度，重点词汇，难句解析
5_6 the Origin of the Pacific Island People题目精讲11-14
15_2 a warm-blooded turtle题目精讲1-10
4_1 Deer Populations of the Puget Sound话题难易度，重点词汇，难句解析
14_6 Maya water problems题目精讲11-14
14_1 children and advertising话题难易度，重点词汇，难句解析
10_4 variations in the climate话题难易度，重点词汇，难句解析
0 介绍课程
15_4 mass extinctions话题难易度，重点词汇，难句解析
4_7 petroleum resources话题难易度，重点词汇，难句解析
14_8 pastoralism in ancient Inner Eurasia题目精讲1-10
1.9 timberline vegetation on mountains题目精讲11-14
9_4 colonizing the Americas via the northwest coast话题难易度，重点词汇，难句
1.4 the origins of theatre话题难易度，重点词汇，难句解析
11_5 orientation and navigation题目精讲1-10
10_8 seventeenth-century European economic growth题目精讲1-10
13_8 method of studying infant perception题目精讲1-10
13_1 types of social groups话题难易度，重点词汇，难句解析
9_7 the arrival of plant life in Hawaii话题难易度，重点词汇，难句解析
6_6 William Smith题目精讲11-14
13_6 biological clocks题目精讲11-14
13_7 method of studying infant perception话题难易度，重点词汇，难句解析
13_5 biological clocks题目精讲1-10
6_9 infantile amnesia题目精讲11-14
12_1 which hand did they use话题难易度，重点词汇，难句解析
7_9 agriculture，iron and Bantu people题目精讲11-14
14_2 children and advertising题目精讲1-10
2.3 the origins of cetaceans题目精讲11-14
2.4 desert formation话题难易度，重点词汇，难句解析
10_1 Chinese pottery话题难易度，重点词汇，难句解析
3.1 architecture 话题难易度，重点词汇，难句解析，题目精讲
8_5 extinction of the dinosaurs题目精讲1-10
9_2 reflection in teaching题目精讲1-10
12_4 transition to sound in film话题难易度，重点词汇，难句解析
14_9 pastoralism in ancient Inner Eurasia题目精讲11-14
6_8 infantile amnesia题目精讲1-10
7_6 Ancient Rome and Greece题目精讲11-14
6_5 William Smith题目精讲1-10
14_4 Maya water problems话题难易度，重点词汇，难句解析