【简答题】口算 2.4×5= 5.7÷0.3= 4.52+2.7= 3÷7= 10-5.1= 13÷5= a÷b= 8 3 =______÷______.
【单选题】David scored a wonderful goal ______the football match and the team won the match ______. [ ]
A.
in the end of; in the end
B.
in the end; at the end of
C.
at the end of; in the end
D.
at the end of; at the end of
【单选题】全国质量技术监督系统经费收入同比增长量最大的年份是:
【单选题】7÷9除到商是0.6时,余数是( )A.3B.0.3C.0.03
A.
5.7÷9除到商是0.6时,余数是( ) A.3
【简答题】计算(1)﹣2.4+(﹣3.7)+(﹣4.6)+5.7; (2)16÷(﹣2) 3 ﹣(﹣ )×(﹣4); (3)﹣12+[(﹣ )+ ]×(﹣24); (4) ; (5)先化简,2(a 2 b+3ab 2 )﹣3(a 2 b﹣1)﹣2a 2 b﹣2再求值,其中a=﹣2,b=2.
【简答题】56÷0.04= 1.44÷2= 24.6÷0.6= 4.5÷0.15= 0.63÷0.09= 12.84÷1.2= 3.9÷0.13= 1.6÷1.6= 20÷0.25= 1.3÷2.5= 100÷12.5= 7.8÷0.13= 3.24÷0.8= 13×1.1= 5.46÷3= 4.07×3= 5.28t-1.99t= 0.6+89= 5.7×0.1= 1.6÷0.4= 6÷0.3= 5÷0....
【单选题】2006—2011,我国贸易顺差占进出口总额的比重最小的年份是( )。
【单选题】全国完成公路水路交通固定资产投资增速按年份排序正确的是: