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英语翻译there are 45 items which are either right or wrong.Each

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英语翻译
there are 45 items which are either right or wrong.Each correct answer is worth one mark,giving a total of 45 marks which are then weighted to produce a score out of 30.This is done to ensure that each paper contributes equally to the final score.
知道大概意思,但是觉得很别扭
这45个选项不是正确的就是错误的,每个正确的答案给1分 总分45.完全正确的45题并不能得到总额在30分以上的单张得分,用以保证单张试卷得分与最后总分的相符.