1. What the video clip"polycythemia", answer "what is the definition causes ofpolycythemia"?
举一反三
- Watch the video clip "The Five Causes of Disease", answer what are these five causes?
- 中国大学MOOC: 2. What causes the Earth to be warmer according to the video clip?
- Watch the video clip again and choose the correct answer to each question. 1. According to the conversation, what is the advantage of cardboard boxes?
- Watch the video clip and answer the questions1. According to the video clip, which city is the greenest one in Asia?2. According to the video clip, what makes Copenhagen the top one eco-friendly city in the world?
- Outside view: Watch the video clip and choose the best answer to the question. What is there at New Bond Street?