【简答题】(1)3+(-2)=______; (2)-2-(-2)=______; (3)-2×5=______; (4)-6÷(-3)=______; (5)1-(-1) 2 =______; (6)-3 3 × 2 9 =______; (7)-2+(-6)÷(- 5 4 )=______; (8)x 5 +x 5 =______.
【简答题】计算: (1)(-2)+(-3)-(+1)-(-6); (2) ; (3) ; (4) 。
【判断题】提高查全率与利用布尔逻辑算符“AND”有关
【简答题】计算: (1)-3 2 ×(-2) 3 ÷[(-1) 6 ÷ 1 6 ×(-3)]+3÷(-2) 2 ; (2)( 1 3 - 1 2 )×|-6|+ 1 4 ÷( 1 2 ) 3 +(-1) 2008 .
【单选题】 在商业企业,很多商品的定价都不进位成整数,而保留零头,这种心理定价策略称为( ) 策略。
【单选题】Where does the rain come from? [ ]
A.
It comes from the clouds.
B.
It comes from the vapour.
C.
It comes from the water.
D.
It comes from the water in the river.