Water Hyacinth

00:00:00,540Part three. You will hear two students called Alia and John discussing the research on water hyacinths. First, you have some time to look at questions twenty-one to twenty-six. 00:00:21,980Now listen carefully and answer questions twenty-one to twenty-six. 00:01:02,620John, how is it going with your research on water hyacinth? 00:01:07,080Well, I went on a field trip on my own and collected the primary data. After I came back, I also referred to the published data. 00:01:14,900So wha...