根据句意，用所给动词的适当形式填空。
(1)By the time he left college, he ____ (get) much working experience because of his part-time job.
(2)John, like other children who have no parents,____  (take) good care of in our country.
(3)We should wash hands properly ____  (fight) against H7N9 virus.
(4)Look! There are so many kites____ (fly) in the sky.
(5)If you want to improve your English, you should practice____ (speak) it as much as possible in and out of class.

小华同学喜欢物理，下列各项是他对生活中的一些物理量的估测，其中最接近实际的是（　　）

如下图所示是两种声音的波形图，从图形可知：图　 ____是音乐的波形，图　 ____是噪声的波形．

下列各项搭配中，哪一项与其他三项不是同一领域（    ）