Unit 5 Humans and nature Viewing workshop-课件-2021-2022学年高一英语北师大版（2019）必修2

Humans and Nature Unit 5 Viewing workshop Part 1—Lead in Lead in Do you know the word —“universe”? Lead in “Universe”—a world or an area of space that is different from the one we are in Lead in Let’s imagine how big is the “universe”. Lead in .... .... .... .... Lead in Let’s watch the video and find the right answer. Then complete the following quiz. A. 13.8 billion B. 27.5 billion C. 46 billion D. 93 billion 1 The universe is about _________________ years old. 2 The observable universe is about _________________ light years across in diameter. 3 Today the distant objects like stars that we can observe are a bit more than _________________ light years away. Lead in Have a try! A. 13.8 billion B. 27.5 billion C. 46 billion D. 93 billion 1 The universe is about _________________ years old. 2 The observable universe is about _________________ light years across in diameter. 3 Today the distant objects like stars that we can observe are a bit more than