单项选择题


Questions 1 to 5 are based on the following conversation.

A． Patients’ relatives are allowed to be there for them.
B． Each patient shall have up to 4 visitors.
C． Everyone can visit the emergency department at all hours.
D． The room gets very crowded if there are many visitors in Emergency.
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单项选择题
After collecting factual data about wars, the scholars devoted themselves to studying
A． the political and social conditions that have often led to war
B． democracies and autocracies
C． the effectiveness of wartime propaganda
D． what caused the actual outbreak of hostilities
单项选择题
The reference to the Gordian knot (para. 5) suggests that the author thinks that
A． barter was inherently too slow
B． it was difficult to change the barter system to a monetary system
C． the economist Gordon deserves credit for introducing the monetary system
D． most people lack the skill to accurately determine the value of commodities
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