听说训练
4Part A Reading Aloud
（模仿朗读）
In this part,you are required to watch a video clip and read after the speaker in the video.
1914.The Panama Canal is completed.The Atlantic and the Pacific are joined.The most ambitious construction project since the great pyramids of Egypt.The work has spanned nearly half a century and claimed the lives of 25 thousand men and women.Now it is finished and the world is suddenly smaller.But behind this epic tale,there is another story of two unsung heroes.One is  ...