According to Paragraph 3, how did Neptunism account for the multiple layers of rock found
A. They were caused by the failure of some minerals to fuse into crystals.
B. Each was deposited by a distinct extreme flooding event.
C. They were the result of an uneven distribution of minerals in the water.
D. The ancient ocean evaporated little by little, leaving rocks at each layer.
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What is the man's problem？
A. He is taking too many classes this semester.
B. He is failing one of his required courses.
C. He has a problem with his academic advisor.
D. He took classes with heavy reading assignments.
What assignment does the professor give his students？
A. They are supposed to identify patterns in the classroom.
B. They should be prepared for a quiz on this lecture.
C. They need to go to the lab to complete an experiment.
D. They have to design a pattern that includes symmetry.
The word accorded in the passage is closest in meaning to
A. elevated.
B. bestowed.
C. acclaimed.
D. applied.
What is the lecture mainly about？
A. Neurotransmitters
B. Seasonal affective disorder
C. Genetic research
D. The National Institute of Mental Health
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