究竟是thirty percent of them is water还是thirty percent of them are water 为什么另外 如何判断类似句子中of后面的be是单数还是复数

究竟是thirty percent of them is water还是thirty percent of them are water 为什么另外 如何判断类似句子中of后面的be是单数还是复数 30% 是thirty percent 还是thirty percents? thirty percent of them cited the mobile phone as the most disliked yet essential invention这句话as是做什么用的? Thirty percent of our classmates __________ from country.A.are B.is C.was D./ 百分之50是fifty percent还是fifty of percent 英语翻译40% of the students40% of students40% studentsforty percent of the studentsforty percent of studentsforty percent students究竟哪个正确呢?搞不清楚啊 short of 40 percent 意思是说不足40 percent还是说差40 percent? 英语翻译Finding of a survey of Systems magazine subscribers:Thirty percent of all merchandise orders placed by subscribers in response to advertisements in the magazine last year were placed by subscribers under age thirty-five.Finding of a surve 英语翻译Deposit advance payment of 30% (thirty percent) from Proforma Invoice’s amount issued by the Seller within 5 (Five) working days counting from the date of its receipt;- Balance payment of 70% (seventy percent) from Proforma Invoice’s gmat逻辑题5.A recent report determined that although only three percent of drivers on Maryland highways equipped their vehicles with radar detectors,thirty-three percent of all vehicles ticketed for exceeding the speed limit were equipped with the percent与percent of有何区别 percent与percent of有何区别 90 percent of 30 one half of one percent是百分之几? a quarter of one percent是0.25%吗 two-tenths of 1 percent 是百分之几, Fifty percent of the students 的同义句是? eight percent of water是单数还是复数?