肾单位是由肾小球、肾小囊和肾小管三个部分组成。（判断对错）

阅读下面的古诗，完成后面小题。
                                                                                                 春夜洛城闻笛 

                                                                                                        李白
                                                                            谁家玉笛暗飞声，散入春风满洛城。
                                                                           此夜曲中闻《折柳》，何人不起故园情。

关于声现象，下列说法正确的是（）

— What do you think of this football match?

— I've no idea. But          is believed that the Spanish team will win.