...skills.(1) The first step is to find them.Go to YouTube...
可知,要选择带字幕的影片,结合空前一句Keep in mind that trailers more than five or seven years old may not offer closed captions on YouTube.(记住,超过5或7年的预告片可能不会在YouTube上提供隐藏式字幕。)可知,超过5或7年的预告片可能没有字幕,所以要选择更新一点的视频,A项"...