7．Medical experts have suspected for many yeas           there is a strong link between      a person eats and cancer．（　�。�
A．that； thatB．不填；thatC．what； 不填D．that； what

分析 醫(yī)療專家多年來一直懷疑一個人的飲食和癌癥之間有密切的關系．

解答 答案：D
題干中a person eats是作介詞between的賓語從句，從句中eat缺少賓語，要用連接代詞what；there is a strong link是作suspected的賓語從句，表達懷疑的內(nèi)容，從句結構完整，要用從屬連詞that連接．故選D．

點評 在句子中起名詞作用的各種從句統(tǒng)稱為名詞性從句．根據(jù)它們在句中的語法作用，這類從句又可分為主語從句、同位語從句、表語從句和賓語從句．

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