问题
inese abacus, officially ______ as a cultural heritage at the 8th Annual UNESCO World Heritage Congress, is another symbol of Chinese wisdom.
A:having listed
B:listed
C:having been listed
D:listing;
B:listed
C:having been listed
D:listing;
正确答案是：
同类题型
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hat the small town you often refer to—Right, Just the one_____ you know I used to work for years.