单选题：Thosecountrieswereonceworriedthattheywouldnothaveadequatesup

题目内容：

Thosecountrieswereonceworriedthattheywouldnothaveadequatesuppliesofpetroleum. A．effective
B．efficient
C．potential
D．sufficient

参考答案：

答案解析：

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Atypicalfeatureofpeoplewithautismistheiruneven__________. A．differenttechniques

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CocoasoonbecamefashionablewhenitwasfirstintroducedtoEurope__________. A．asadrin

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根据以下材料，回答题 ImportanceofChildren'sOralHealth FebruaryisNationalChildren'sDental

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