2018高考英语二轮复习之阅读理解猜测词意(6)

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19. 下题中划线的词可换为：
New York, 10 November, 5:27 p.m., yesterday. Biggest power failure in the city’s history.
A. enough B. not passing C. lack of D. lack
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20. Rainforests like the Amazon are important for mopping up CO2 from the atmosphere and helping to slow global warming.
The underlined phrase “mopping up ” in the second paragraph means _______.
A. cleaning up B. taking in C. wiping out D. giving up
21. She walked quietly to the small room by the lift and took a mop. She pushed past the desk and as the nurse looked up. Mum nodded and said, “Very dirty floor.”
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22. The most important reason for such a visit is to realize how our ancestors battled nature with the basic tools they had.