According to the passage, carbon emissions may be reduced by ______.

(单选题)Which word best describes Brandon’s present life? (单选题)Where is Brandon living according to the text? (单选题)What can we learn about the rental market in San Francisco? (单选题)What does the underlined word “predicament” in Paragraph 2 p (单选题)What can be the best title for the text? (单选题)What made Dr. Schlaug surprised? (单选题)Why can musicians hear better according to Nina Kraus? (单选题)Which of the following did Nina Kraus study? (单选题)（ ） (单选题)The novel, ______, was written by Charles Dickens.