Why does the author mention "the Louisiana Purchase"？
A．To demonstrate how the westward expansion of the United States came about.
B．To illustrate Washington"s contribution to the evolution of the United States.
C．To explain why Jefferson was chosen to be one of the presidents on Mount Rushmore.
D．To show why Jefferson"s inclusion on Mount Rushmore was a contentious issu
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The word "envisaged" in the passage is closest in meaning to
A．discussed.
B．conceived.
C．rejected.
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According to paragraph 4, what is one effect of a species having young that need to learn their behavior？
A．The species develops strong communication skills.
B．The species becomes more social.
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Why does the professor mention the auditorium？
A．To familiarize the students with the environmental design of the auditorium.
B．To point out how the unusual features of the classroom affect their environment.
C．To explain the values of environmental psychology to the students.
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Raising the minimum wage is a powerful complement to other policies thegovernment uses to improve the poorest‘s standards of living.
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Why does the professor recount the washing detergent experiment in detail？ Click on 2 answers.
A．To illustrate to the class that consumers pay too much attention to packaging.
B．To explain the types of experiments that environmental psychologists conduct.
C．To highlight the likelihood of people criticizing new products that are being tested.
D．To validate the claim earlier in the lecture that color influences people in specific ways.