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The force of the evidence cited in the passage is most seriously weakened if which of the following is true?
Conifer charcoal found at the Neal Garrison archaeological site may include wood from several different species, such as spruce and pine; however, (i) ____________ of the charcoal (ii) ____________ the precise determination of its origins.
The Prime Minister's reasonable intention is that the government should (i)____________ those powers that it is not (ii)____________ to exercise directly but that it should use effectively those powers it does retain.
In polls, women are more likely than men to express (i)____________ environmental issues, but greater concern doesn't necessarily entail greater (ii)____________: in one survey, men and women were equally (iii)____________ about the amount of energy various activities use.
The author of the passage mentions Leleux primarily in order to
In the context in which it appears, "seriousness" most nearly means
Which of the following best expresses the main point of the passage?
It can be inferred from the passage that if other conditions affecting plant growth and yields remained constant while carbon dioxide levels doubled, which of the following mixes would experience the greatest reduction in crop yield?
Which of the following, if true, would cast most doubt on the speculations of the "scientists"?
We tend to think of plants as _____________, yet in a sense, some move with spectacular speed as they propel their reproductive particles-seeds and spores, pollen and sperm as far as they can.
Given the wild and fantastical nature of the witness's story, it is not surprising that many believe it to be ____________.
Which of the following is an assumption on which the scientists' hypothesis depends?
The primary purpose of the passage is to
The author of the passage suggests which of the following about the early-nineteenth-century British economy?
Which of the following best describes the function of the first sentence in the context of the passage as a whole?
The author's critique of what "Glaciologists have conjectured" assumes that
If dark energy is an energy field, it would not be ____________: it might once have been stronger or weaker than it is now and could have affected the universe differently at different times.
Many parents who attended the school board meeting ____________ the fact that emerging social problems in some way affected nearly every pupil at the school; nonetheless, these parents often acted with a view to helping only their own children.
In the context of the passage as a whole, the reference to the effect of colder temperatures serves primarily to
The highlighted sentence performs which of the following functions?
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