【GMAT考满分语法SC题库】In a recent study published in Nature Neurosci_真题_答案

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In a recent study published in Nature Neuroscience, a team of scientists, concluding that, since participants who took caffeine tablets in a memory test outperformed participants who took placebo tablets in that test, caffeine enhances short-term memory.

Ascientists, concluding that, since participants who took caffeine tablets outperformed participants who took placebo tablets in a memory test, 分析该选项
Bscientists, concluding that, since participants who took caffeine tablets in a memory test outperformed participants who took placebo tablets in that test, and 分析该选项
Cscientists concluded that, since participants who took caffeine tablets in a memory test should outperform participants who took placebo tablets, 分析该选项
Dscientists concluded that, since participants who took caffeine tablets in a memory test did outperform participants who took placebo tablets in that test, 分析该选项
E
scientists concluded that, since participants who took caffeine tablets in a memory test outperformed participants who took placebo tablets in that test,
分析该选项

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正确答案: E

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