Foreigners are, more often than not, amazed at the vast ____(expand) of the Chinese territory.
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A large number of weapons for mass ____(destructive) were put into use in the Second World War.
The ____(explore) of space has long been a topic that fascinates the scholars in the Academy.
The internal affairs cannot be ____(intervention) by external forces.
His theory on cultural shock was ____(contradict) to what he mentioned in his speech delivered in the conference.