聪明——____ 激烈——____ 刚毅——____ 迫切——____
如图是某同学绘制的金鱼尾鳍内血液流动示意图,请根据各血管中血液的流动方向判断①、②、③三种血管分别属于( )
—I think students should have mobile phones to call their parents.
—________. They often use them to play games instead.
已知等比数列an的首项a1=1公比q=2,则log2a1+log2a2+…+log2a11=( )