单项选择题

We can easily conclude that ______.

A．gold is not as expensive to mine as other metals
B．one trusts gold more than paper money
C．gold is the easier metal to work with
D．gold is the first metal used to determine the value of currency

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热门试题

单项选择题

Throughout history gold ______.

A．has played an important role in the world economy
B．has set the standard by which all other forms of money are valued
C．has brought out the worst in the human character
D．has been extremely difficult to find

单项选择题

Which of the following periods saw people develop a more communal form of living

A．Paleolithic
B．Ice Age
C．Mesolithic
D．Neolithic