题目内容：
According to the passage, Turner, Becker, and Jameson have done which of the following?I. They failed to acknowledge the colonists' desire to affirm the existing order as a principle motive behind the American Revolution.
II. They have emphasized, but not sufficiently, the concept of the American Revolution as a genuine revolution.
III. As a group they have failed to reach agreement on the root causes of the American Revolution.
参考答案：
答案解析：