More than three quarters of the population are Chinese.句中be动词为什么用了复数?不可数名词be动词只能用单数,难道population有什么特殊的用法吗?请赐教?

是not more than three还是no more than three in no more than three 1.The doctor and nurses are doing their best to fight SARS.They think more of others than _____.2.The pencil-case feels .A.soft B.hard C.hardly D.softly3.--- does he weigh?---He weighs 70 kilograms.A.How heavy B.How many C.How much D.What4.Three quar more than three out of four 翻译：studied with more than three friends? no more than three words如何对付 three more than half 是3. birth to three is more important than three to death more than three students 后面的be 用单数吗more than one student ____do you exercise? More than three times a week. Zhang Guorong____(die) for more than three years 翻译：that's more than two for every three automobiles. not to do anything more than three timesa... for more than three years（用啥提问） for more than three months用什么提问 I have p() you more than three hours more than three qauter ( is 还是are )population , “Three” is three times “____ one” and twice “_____ one ”.A:more than,more than B:as much as,more than 选什么?为什么