首先是问题
TPO5 听力section2
9
According to the professor, what is the primary advantage of spectroscopy over other laboratory methods for analyzing artworks?
答案It does not damage the artworks.从那句看出来的?
原文看不出啊
Now, Spectroscopy has a very distinct advantage over previous methods of
analyzing our works, because it's not invasive. You don't have to remove big
chips of paint to do your analysis, which is what other methods require. All
you do is train the microscope on tiny flecks of paint and analyze them.
Now a word or two about restoration.
The term “Cambrian explosion” refers to the geologically brief period during which all modern animal groups evolved.
Answer Choices
1 Little is known about the stages of evolution during the Cambrian period, in part because early animals were soft bodied and could fossilize only under particular conditions.
2While animal fossils from before the Cambrian explosion have no modern descendants, many animals that evolved during the Cambrian explosion can be assigned to modern groups.
3The Cambrian period is significant because it marks the emergence of eukaryotic life-forms – organisms that have cells with true nuclei
4 The Ediacara fossil formation provides the most information about the Cambrian explosion, while the earlier, Tommotian and Burgess Shale formations give clues about Precambrian evolution.
5Zoologists are awaiting the discovery of a 600-million-year-old fossil formation in order to be able to form a theory of how animal evolution progressed.
6Although the reasons for the rapid evolution of animals during the Cambrian period are not known, one proposed explanation is an abundance of niches with a lack of competitors.
问下1,4之间的舍取