【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
【判断题】Should it rain, the crops would be saved. =Were it to rain, the crops would be saved.
【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。
【判断题】"Should it rain, the crops would be saved. " means "Were it to rain, the crops would be saved. "
【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.