民意测验、市场调查和人口普查都属于( )
A.同期群研究
B.同组研究
C.趋势研究
D.横向研究
正确答案是D
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Complete the following sentence with a (compound) word derived from the one(s) given in bracket.
He has been more appreciated by people abroad than by his own ( ). (country, man)
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