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(单选题)The last two paragraphs tell us that ______. (单选题)We can learn from the passage that the blindfolded group ___ (单选题)With the lights out, diners eat less partly because ______. (单选题)What is the best title for the passage? (单选题)Which of the following words can best describe Alexis? (单选题)What did Alexis do to save Sue? (单选题)What was Sue doing when she was attacked by the deer? (单选题)Which of the following helps teenagers sleep well? (单选题)From the article, which of the following may NOT cause sleep (单选题)Which of the following means that you sleep well?