托业考试

根据网考网考试中心的统计分析，以下试题在2017/11/28日托业考试习题练习中，答错率较高，为：63%
【单选题】______ of the two subjects in the experiment realized that they were being given placebos instead of the real medication.

• (A) Most
• (B) Either
• (C) Several
• (D) Neither