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SAT官方每日一题附答案和解析[数学](2020年5月12日)

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答案:D

解析:

Choice D is correct. The point indicated is the highest point on the graph. Since t represents the time in hours since the daughter material was created and M represents the mass of the daughter material, the point shows the values of t and M when M is greatest. Therefore, the point shows the maximum mass of the produced substance and the number of hours since it was created that its mass reached this maximum.

重点单词   查看全部解释    
substance ['sʌbstəns]

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n. 物质,实质,内容,重要性,财产

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graph [grɑ:f]

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n. 图表,示意图
vt. (以图表)表示

 
measured ['meʒəd]

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adj. 量过的,慎重的,基于标准的,有韵律的 动词me

 
stable ['steibl]

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adj. 稳定的,安定的,可靠的
n. 马厩,

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decay [di'kei]

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v. (使)衰退,(使)腐败,腐烂
n. 衰退

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mass [mæs]

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n. 块,大量,众多
adj. 群众的,大规模

 

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