The study was carried out in one small town so we can’t be sure that the results are truly ________.
A．exact B．properC．representativeD．natural
A
詞義辨析，四個選項分別表示準確的精密的、適當?shù)�、有代表性的和自然的，根�?jù)題意選A，這項研究時在一個小鎮(zhèn)上實行，因此我們不能確定結(jié)果是否真的準確。
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