单项选择题

What is the passage mainly about

A．Several worldwide economic problems.
B．The causes and consequences of trade deficit.
C．Lack of resources in underdeveloped countries.
D．The value of exports against imports.

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单项选择题

The word deficit Line 4, Para. 1 ) would be best replaced by which of the following

A．shortage
B．situation
C．increase
D．products

单项选择题

According to the passage, when docs a trade imbalance occur When ______.

A．a country has serious economic problem
B．a country sells more products overseas than it imports
C．the value of the products a country imports is greater than the value of the product it exports
D．a country can't develop its natural resources