【判断题】在春秋战国时代,各民族根据不同的文化和生活方式,已经出现了非常清晰的划分。()
【单选题】Larry was so absorbed in his novel that he forgot about his dinner cooking in the oven.
【单选题】Which of the following descriptions about the opening chapter in the novel is incorrect?
A.
The truth of selection process is concealed by a competition for twosomes.
B.
It is implied in this chapter that Noah has an appetite for animal flesh.
C.
There was never a “natural selection” among the animals.
D.
According to the narrator, though God is benevolent, the person that he chooses to preserve is not a nice man at all.
【简答题】根据2.52÷21=0.12,直接填空. 25.2÷21= 0.0252÷21= ______÷21=12.
【简答题】3 4 =______÷______= ( ) 12 = 21 ( ) .
【简答题】先计算一下12×42和24×21的积,看看它们相等不相等,原来12×42可以改写成12×2×21=24×21,所以12×42=24×21,这样的算式还有12×63=36×21等,你能再写一个吗?
【简答题】3÷4= () 12 =______%=21:______=______(小数).
【简答题】75=______:12=12()=21÷______=______%0.75=______:12= 12 () =21÷______=______%