Themachinehasbeenusedmanyyears.It'snowonderthatitdoesn'...
問題詳情:
The machine has been used many years. It's no wonder that it doesn't work well ________.
A.regularly B.constantly
C.occasionally D.frequently
【回答】
C 考查副詞辨析。occasionally 偶爾; regularly 定期地; constantly 不斷地,經常地; frequently 頻繁地,經常地。句意:這臺機器用了好多年了,難怪(它)偶爾運轉不良。
知識點:副詞
題型:選擇題
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_____________,_____________。萬里悲秋常作客,百年多病獨登臺。杜甫《登高》
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以KCl和ZnCl2混合液為電鍍液在鐵製品上鍍鋅,下列說法正確的是( )A.未通電前上述鍍鋅裝置可構成原電池...
問題詳情:以KCl和ZnCl2混合液為電鍍液在鐵製品上鍍鋅,下列說法正確的是()A.未通電前上述鍍鋅裝置可構成原電池,電鍍過程是該原電池的充電過程B.因部分電能轉化為熱能,電鍍時通過的電量與鋅的析出量無確定關係C.電鍍時保持電流恆定,升高溫度不改變電解反應速率D.鍍鋅層破...
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某有機物結構簡式為,下列關於該有機物的說法中不正確的是( )A.遇FeCl3溶液顯紫*B.與足量的*氧化*溶...
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