In Paragraph 4, why does the author give details about various legislative acts that were
A. To discuss the government's successful attempts to put an end to squatting.
B. To describe how the U.S. government provided incentives for people to move west.
C. To demonstrate that western territories were subject to the same laws as the rest of the country.
D. To show that there were many barriers to becoming a landowner in the west.
查看答案
The word discipline in the passage is closest in meaning to
A. field.
B. inquiry.
C. idea.
D. potential.
What aspect of the fossil record is this lecture mainly about？
A. The impact hypothesis
B. Mass extinctions
Climate change
Diversity in species
What is the impact hypothesis？
A. The theory that the continents drifted and collided with each other
B. The idea that volcanic eruptions disrupted the climate worldwide
C. The view that a lightening storm caused a global fire
D. The premise that an asteroid crashed, blocking the sunlight on Earth
What will the man probably do during the next class？
A. He will ask fewer questions.
B. He will tape record the lecture.
C. He will refer to the outline in the book.
D. He will participate more in the discussion.
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