Because a study published in the Electronic Journal of Research in Educational Psychology suggests that students who think out loud while taking a math test are more likely to get the right answer.
因为《电子学季刊—教育心理学研究》杂志上的一项研究表明，那些在数学考试过程中把解题思路念出来的人最后得到的答案会更准确。
3：Bob! Hey, Bob, wake up! It's already 9:30 and you've got that big math test at 10 o'clock. Come on, man, shake a leg! Come on, - you've got to get moving right now!
他使劲叫醒Bob，因为已经到九点半了，而Bob十点有数学大测验。时间紧迫，所以他要Bob必须立刻行动起来。 显然他说shake a leg，是催促Bob赶快行动。这就是这个习惯用语的意思。
Last year, for example, a fourth grader had to get 37 out of 70 possible points on the math test to reach level 3 (out of 4), or grade level.
例如，在去年，一个四年级生需要在满分70分中得到37分才能达到3级或是年级平均水平。
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