【简答题】计算: (1) ( 7 9 - 5 6 + 3 4 )×36 (2) - 2 3 ÷ 4 9 ×(- 2 3 ) 2 .
【简答题】计算:( 2 -3) 0 - 9 -(-1) 2013 -|-2|+(- 1 3 ) -2 .
【多选题】Listen again. Then choose the correct answer to the question. There is more than one answer for some items. 1. What is the association working on ?
【单选题】css中的float属性主要作用是( )
【简答题】计算: 4 -(π-3 ) 0 -10sin30°-(-1 ) 2013 +( 1 3 ) -2 .
【单选题】79×99+79=79×(99+1)=79×100=7900,这是根据乘法 [ ]
【判断题】地形若有 3% 左右的坡度则比较适合地表水汇集、排除。
【单选题】She really wanted to say something at the meeting, but eventually______from it. (2013-79)