单项选择题

Questions 7 and 8 are based on the following news. At the end of the news item, you will be given 20 seconds to answer the questions. Now listen to the news. The recent fluctuation of the stock market in New York was due to

A.Greenspan’s remarks.
B.the slack US business.
C.the excessive optimism.
D.the weakened US economy.
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填空题
a — 删去a。
填空题
time — 改成hours。