还在对着GMAT语法难题不知如何是好?北京新东方GMAT教师周谢慧和王燚在此为大家带来详细的题目解析。
(GWD-TN-1-Q19) Recently physicians have determined that stomach ulcers are not caused by stress, alcohol, or rich foods, but a bacterium that dwells in the mucous lining of the stomach.
A.not caused by stress, alcohol, or rich foods, but
B.not caused by stress, alcohol, or rich foods, but are by
C.caused not by stress, alcohol, or rich foods, but by
D.caused not by stress, alcohol, and rich foods, but
E.caused not by stress, alcohol, and rich foods, but are by
以上是北京新东方GMAT教师周谢慧和王燚为大家带来的关于GWD-TN-1-Q19的详细解析。
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