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题目内容
（乐山师范学院英语读写译）
It has been estimated that up to 75% of words in English sentences are _____.
A. grammatically unnecessary
B. essential to the meaning
C. not absolutely essential to grasp of meaning
D. regressed more than once by poor readers
A. grammatically unnecessary
B. essential to the meaning
C. not absolutely essential to grasp of meaning
D. regressed more than once by poor readers
参考答案