单项选择题

Which of the following is not mentioned as a necessary part to maintain America's scientific leadership

A．Money.
B．Combination of various disciplines.
C．Joint efforts of the most intelligent scientists.
D．Favorable academic atmosphere.
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单项选择题
Japan's current economic crisis is the worst since ______.
A．World War Ⅰ
B．World War Ⅱ
C．the Gulf War
D．the Korean War
单项选择题
What occurred during the bubble years of Japan's economy
A．Money poured into the bullish stock market.
B．The value of the Japanese yen rose sharply.
C．Financial institutions invested overseas.
D．Many individual depositors have withdrawn their money in droves.
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