Scientists are beating their brains out trying to come up with a solutionsolution (solve) to the problem.
【考點(diǎn)】可數(shù)名詞及其單復(fù)數(shù).
【答案】solution
【解答】
【點(diǎn)評(píng)】
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發(fā)布:2024/5/23 20:38:36組卷:5引用:1難度:0.7
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