肺分肺实质和肺间质两部分。肺实质即肺内支气管的各级分支及其终末的大量肺泡；肺间质即肺内的结缔组织及血管

Based on the poem "No Man is an Island" and the video of "Joker Oscar", please write down your reflection on the ongoing epidemic of SARS CoV-2. Try to write at least three sentences in a refined and

Watch the video of 1.5 and 1.6 and write the outline

Watch the video of 3.4 and write the outline

Watch the video clips of Unit 5, and write a summary of the complete video with about 150 words.

Watch the video of 3.6 and write the outline；finish Exercise II.

Watch the video 4.3 篇章结构 A Matter of Sovereignty and write the outline

Watch Video 2.1 概念导入 Intellectual Property and write the outline

Watch the video 4.5 语言难点 Language Focus and write the outline

Task 2 Summary Practice Directions: Watch the video and write your summary.

Watch the video of 3.1 and write the outline; finish Exercise IV on page 27