单项选择题

Nobody yet knows how long and how seriously the shakiness in the financial system will（）down the economy.

A. put
B. settle
C. drag
D. knock

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单项选择题
The destruction of rainforests has been （）as a disaster for the environment.

A. blamed
B. declared
C. condemned
D. appealed
单项选择题
What was far more amazing and entirely unexpected, not least by governments and business- men anxious about post-war ruin and possible depressions, was the ______ of global economic growth after the Second World War.
A. climax
B. surge
C. spiral
D. survival
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