5岁儿童有意注意时间为
A.10分钟
B.15分钟
C.20分钟
D.25分钟
E.30分钟
请帮忙给出正确答案和分析,谢谢!
关键词诊断优化高曝光高点击是指:曝光量领先于()%同行,点击量领先于50%同行的关键词
A、60
B、50
C、70
D、40
What does the word "sweat" in Paragraph One probably mean?
A.Be worried about something.
B.Feeling very hot with something.
C.Trying to avoid difficult things.
D.Getting inspiration from something.
请帮忙给出正确答案和分析,谢谢!
Why did Ms. A tell the author her family background?
A.She wanted to get donation from the author.
B.She just wanted someone to listen to her.
C.She asked the author to look after her children.
D.She intended to make clear of her illness.
请帮忙给出正确答案和分析,谢谢!
平均每日可以摄入某营养素的最高量是
A.EAR
B.RNI
C.DRI
D.AI
E.UL
请帮忙给出正确答案和分析,谢谢!
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