【正确答案】
E
【答案解析】The last sentence points out that Du Bois originally agreed with Washington's program. Choice A is incorrect. Nothing in the passage suggests that Du Bois sacrificed effective strategies out of a desire to try something new. Choice B is incorrect. Du Bois gained in influence, effectively winning away large numbers of blacks from Washington's policies.
Choice C is incorrect. Du Bois' quickness to depart from conventional black wisdom when it proved inadequate to the task of advancing the race shows him to be well able to change with the times.
Choice D is incorrect. Washington, not Du Bois, is described as seeking the good will of powerful whites.