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Read the following passage, which contains some underlined or numbered words or phrases. Each of the answer choices contains alternatives for the underlines; choose the one that fits best grammatically or stylistically. If you think the original is the best answer, choose Choice ‘A’, or NO CHANGE.

Questions about specific parts of the passage or about the passage as a whole are identified by numbers only, not underlines. These will be associated with specific questions.

Can We Turn a Chimp into a Man?

Created for September 2014

According to Wen-Hsiung Li, a molecular evolutionist at the University of Chicago, the difference might be in the parts of the genome that regulate other gene (11) activity, since we still have very little knowledge of how our genome actually works to create proteins and other life-sustaining chemicals in humans, these differences are significant.




activity; since


activity; and since


activity and since

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