Tom is standing ______the teacher's desk.A.with B.in C.beside

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• Tom is standing ______the teacher's desk.A.with B.in C.beside
• Tom is standing ______the teacher's desk.A.with B.in C.beside
• 选择：1.Our teacher came into the classroom,with__book in her hand a.a b.an c.the d./2.The lady__blue is Tom's mother a.at b.in c.on d.with3.I want__bread,but I don't want___milk a.any,some b.some,any c.any,any d.some,some4.The water in this river is very dirty. ___people swim there a.Few b.A few c.Little d.little5.He comes from__,but he knows little___history a.America, American b.American, America c.America, America d.America
• 如果多项式x四次幂-（a-1）x的三次幂+5x二次幂-（b+3）x-1不含X的三次幂和X项,那么a+b的值是多少?
• 我国古代问题用绳子量井深,把绳3折来量,井外余绳4尺.把绳4折来量,井外余绳1尺.求井深和绳长.