A:2倍
B:12
C:14
D:4倍
如图是人体肺部和血液之间的气体交换结构示意图,请结合图示分析下列说法错误的是( )
下列关于陆地地形的叙述,正确的是( )
①林则徐 ②邓世昌 ③赵登禹 ④黄继光 ⑤邱少云
—Look! How _________ the market is!—Yes. There are always lots of people buying things there.