题目内容
(请给出正确答案)
[主观题]
According to Melhuish, his present MFC ______.A.is of very little use right nowB.is no mor
According to Melhuish, his present MFC ______.
A.is of very little use right now
B.is no more efficient than previous ones
C.consumes a lot of organic materials
D.is already considerably efficient
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