大陆被赤道穿过的大洲有(      )

某校研究性学习小组他们准备用加热高锰酸钾的方法制取氧气并验证氧气的性质．

（1）写出用该方法制取氧气的化学反应方程式式____ ．

（2）请指出图中所用仪器的名称：a____b____  c____ d____ ．

（3）所用的装置图中有一些错误，请你指出来：

①____②____ ③____ ．

补全对话

从方框中选择最佳选项完成对话。

a. I love his music!

b. Was he French?

c. Yes, it's so beautiful!

d. What a beautiful city!

e. Pop music.

A: This is Western music, isn't it? Can you hear the piano?

B: ____Is this by Strauss or Mozart?

A: It's by Strauss. ____Do you know anything about him?

B: ____

A: No, he was born in Vienna, the capital of Austria. ____

B: What's the name of the music?

A: It is called The Blue Danube. By the way, do you like traditional music or pop music?

B: ____

A: Me too.