Under the gold standard the gold par value was $20.67 per ounce in the United States. The gold par value was ₤ 4.2474 per ounce in Britain. The par exchange rate (dollars per pound) implied by the gold parities is __________.
A.
$4.8768/ ₤
B.
$4.9785/ ₤
C.
$4.8665/ ₤
D.
$4.5675/ ₤
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【简答题】The mayor would rather_______(主持了新闻发布会)last week,but he was very busy at that time.