阶段分类
1-5 入门基础，6-35 巩固练习，36 之后的用于测试和模考
学科分类
集中弥补容易丢分的话题和学科短板
26
Energy and the Industrial Revolution
考友平均正确率：74.63%
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Survival of Plants and Animals in Desert Conditions
考友平均正确率：69.58%
Sumer and the First Cities of the Ancient Near East
考友平均正确率：81.72%
27
Crafts in the Ancient Near East
考友平均正确率：72.20%
The Formation of Volcanic Islands
考友平均正确率：74.31%
Predator-Prey Cycles
考友平均正确率：68.93%
28
Groundwater
考友平均正确率：70.38%
Early Saharan Pastoralists
考友平均正确率：68.52%
Buck Rubs and Buck Scrapes
考友平均正确率：78.90%
29
Characteristics of Roman Pottery
考友平均正确率：74.15%
Competition
考友平均正确率：71.60%
The History of Waterpower
考友平均正确率：70.99%
30
Role of Play in Development
The Pace of Evolutionary Change
考友平均正确率：72.91%
The Invention of the Mechanical Clock
考友平均正确率：78.20%
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