在一幅比例尺为1：4000000的地图上，图上1厘米代表的实际距离是（     ）

短文改错。

    Do you like pop music? Most people did ____. One of the best bands is the New Ocean Waves. In the last twelve  month ____, they've had three major concerts and make ____ a hit CD. They're going to appear in ____ CCTV next month. And then they are going to go on a world tour which ____ they will perform in ten different cities. Be sure not to miss them if they will come ____ to a city near you-- if you can get tickets. For years, we played other peoples' ____ songs,“says leader Zhu Wen. “But now we play most ____ our own songs. We've had few ____ songs in the top ten, but we really hope to have a number one hit some day.” Good lucky ____  to the New Ocean Waves! They're off to a great start. And they're really nice people.

蒙辞以军中多务____   见往事耳____       即更刮目相待____

愿为市鞍马____       赏赐百千强____     对镜帖花黄____

金属冶炼工业中常用化学性质比较活泼的金属还原出相对不活泼的金属．如：用铝和二氧化锰在高温下反应，可以制取金属锰．反应的化学方程式为：aAl+bMnO₂cAl₂O₃+dMn下列说法中，错误的是（　　）