如图是新鲜绿叶的四种光合色素在滤纸上的分离的情况,以下说法正确的是( )
A:色素乙在滤纸条上扩散速度最快
B:四种色素都能溶解在层析液中,丁色素的溶解度最小
C:水稻在开花季节采下的新鲜叶片做实验,其结果与图中结果相似
D:研磨时未加碳酸钙,滤纸条上四种色素可能都不出现
算24点是我国传统的扑克游戏,这里有4张扑克牌,红桃3,方片5,黑桃5和梅花9,用它们凑成“24点”的算式是____ .
在由正整数构成的无穷数列{an}中,对任意的n∈N*,都有an≤an+1,且对任意的k∈N*,数列{an}中恰有k个k,则a2016=____
Do you often watch TV? Maybe your 1 is "Yes". Most children like watching TV 2it's interesting and relaxing. They can also learn a lot and know3 things about their country and the world. TV helps to open children's eyes. TV can open 4mind. They can learn some better ways of 5 things. Many children are always6 with their studies, so they watch TV only on weekends. 7 some children watch TV every night. They go to 8very late and they can't have a good rest. I 9 it's good to do so. What do you 10 it?
“失败乃成功之母”告诉我们,只有多经历失败,才可能获得成功。( )