A new study finds that blacks on death row (1) of killing whites are more likely to be executed than whites who kill minorities. It also concludes that blacks who kill (2) minorities are (3) likely to be executed than blacks who kill whites. For example, there is more than a twofold greater risk that an African-American who killed a white will be executed than a white person who kills a (4) victim. A Hispanic is at least 1.4 (5) more likely to be executed (6) such an offender kills a white.
The researchers of the study believe that there are two (7) explanations.. First, prosecutors often win (8) office if they win well-publicized cases. When a black kills a white, such killings gets more (9) and this idea can be (10) by many famous cases. (11) , the court judges at the state level are often (12) to elections, called retention elections. Retention election or judicial retention within the United States court system, is a periodic process, in which the voter (13) approval or disapproval for the judges presently (14) their position, and a judge can be removed from the position if the (15) of the citizens vote him or her out. Just as the researchers (16) out, death penalty is (17) political.
The findings of the study, in short, show that American justice systems clearly (18) white lives more than those of blacks or Hispanics. The researchers also say their findings (19) serious doubts about (20) that the U.S. criminal justice system is colorblind.
20（）
A.dissertations
B.affirms
C.claims
D.suggestions
参考答案：C
解析：
[考点] 词义辨析
显然，本文的写作目的在于攻击美国一向标榜的“司法公正”。that引导的从句是完整的句子，不缺少成分，那么该从句应当不是定语从句，而是同位语从句修饰空格处要填写的单词。句中colorblind是合成词，由color(颜色)和blind(瞎的)组成，对颜色瞎，意思是部分颜色(种族)，也就是所有肤色的人种一视同仁。而“各色人种在法律面前一律平等”是作者攻击的目标，既不是论文也不是建议，而是向来存在的说法，因此选项C符合题意，是正确答案。
[干扰项分析] 从语法上看，空格处要填的单词作介词about的宾语，因此应当是名词。选项B是动词，它的名词应当是affirmation，因此可以首先排除。代入剩下两个选项，得出“引起对学位论文的怀疑”和“引起对这个建议的怀疑”，均不符合题意。