單項填空---Doesyourfathergotoworkby
問題詳情:
單項填空
--- Does your father go to work by ______ car every day?
--- No, he sometimes takes ______ bus.
A. A;the B. the; a C. 不填; a D. a; 不填
【回答】
C
知識點:冠詞
題型:選擇題
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.已知各項均不為零的數列{an},定義向量.下列命題中真命題是( )A.若∀n∈N*總有cn⊥bn成立,則數...
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命題“若aA,則b∈B”的否命題是( )(A)若aA,則bB (B)若a∈A,則bB(C)若b∈B,...
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下列說法正確的是:( )A.1molN2的質量是14g B.H2SO4的摩爾質量是98gC.H...
問題詳情:下列說法正確的是:( )A.1molN2的質量是14g B.H2SO4的摩爾質量是98gC.H2O的摩爾質量是18g/mol D.1molHCl的質量是36.5g/mol【回答】C知識點:物質的量單元測試題型:選擇題...
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