问题
选择题
It is difficult to ________ what the long-term effects of the accident will be.[ ]
A. ensure
B. predict
C. look forward to
D. understand
答案
答案：B
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It is difficult to ________ what the long-term effects of the accident will be.[ ]
A. ensure
B. predict
C. look forward to
D. understand
答案：B