In its 1903 decision in the case

of Lone Wolf v. Hitchcock, the United

States Supreme Court rejected the

Line efforts of three Native American tribes

(5) to prevent the opening of tribal lands

to non-Indian settlement without tribal

consent. In his study of the Lone

Wolf case, Blue Clark properly

emphasizes the Court’s assertion

(10) of a virtually unlimited unilateral power

of Congress (the House of Represen-

tatives and the Senate) over Native

American affairs. But he fails to note

the decision’s more far-reaching

(15) impact: shortly after Lone Wolf, the

federal government totally abandoned

negotiation and execution of formal

written agreements with Indian tribes

as a prerequisite for the implemen-

(20) tation of federal Indian policy. Many

commentators believe that this change

had already occurred in 1871 when—

following a dispute between the

House and the Senate over which

(25) chamber should enjoy primacy in

Indian affairs—Congress abolished

the making of treaties with Native

American tribes. But in reality the

federal government continued to nego-

(30) tiate formal tribal agreements past

the turn of the century, treating these

documents not as treaties with sover-

eign nations requiring ratification by the

Senate but simply as legislation to be

(35) passed by both houses of Congress.

The Lone Wolf decision ended this

era of formal negotiation and finally

did away with what had increasingly

become the empty formality of obtain-

ing tribal consent.

According to the passage, which of the following was true of relations between the federal government and Native American tribes?

Some Native American tribes approved of the congressional action of 1871 because it simplified their dealings with the federal government.

Some Native American tribes were more eager to negotiate treaties with the United States after the Lone Wolf decision.

Prior to the Lone Wolf decision, the Supreme Court was reluctant to hear cases involving agreements negotiated between Congress and Native American tribes.

Prior to 1871, the federal government sometimes negotiated treaties with Native American tribes.

Following 1871, the House exercised more power than did the Senate in the government’s dealings with Native American tribes.

答案是D

其实做的时候我也选D，现在复，想得多了，反而不明白了，既然原先negotiate是prerequisition,那是不是意思说是必须要negotiate的呢？而不是题目里的sometimes呢？还是这个sometime其实是NATIVE AMERICAN TRIBE缘故，因为有时候他们觉得没必要，他们认为政府给出的treaty能够接受。。。。是这个意思吗？

别的答案看了，没什么可选的~~

请牛牛指教！谢谢先！