Where Is the Great Wall?长城在哪儿+Where Is Mount Everest?(珠穆朗玛峰在哪里?)+What Is the Statue of Liberty?+Where Is the Empire State Building?+What Was Hurricane Katrina?+Where Is Niagara Falls?等共计12本合售
What Was the First Thanksgiving?+What Is the Panama Canal?+What Was the Hindenburg?+Who was the gold rush? 什么是淘金热+Where Is Machu Picchu?
以下为对购买帮助不大的评价