255. The college entrance examination is drawing near and all the students are ploughing t

发布时间：2020-08-16 07:05:20


255. The college entrance examination is drawing near and all the students are ploughing through their studies. What does the underlined part means     .
A. learning to plough
B. studying hard
C. ploughing the field
D. studying the plough

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A. learning to plough
(答案→)B. studying hard
C. ploughing the field
D. studying the plough
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