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【单选题】
下列有机化合物的系统命名正确的是( )A.
3-甲基-4-乙基
B.
3,3,4-三甲基己烷
C.
3,4,4-三甲基己烷
D.
3,5-二甲基己烷
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【单选题】The author planned to stop at Oklahoma City ______.
A.
to visit a friend
B.
to see his parents
C.
to pay at the cash register
D.
to have more gas for his car
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