Do you agree or disagree that the success of a school depends on experienced teachers?
The student proposes that the university should set a coffee and tea station in student dorms because that can be time-efficient and can also save students a lot of money.
【学生态度】：The woman can’t agree more with this proposal for two reasons.
The first reason is that it’s really hard for students to get up early in the morning and they are always in a rush and don't have time for breakfast. It can be a whole lot easier for them to grab a nice cup of coffee in their dorm buildings and they don't have to go all the way to the dining hall.
What’s more, it can also save them a lot of money from buying coffee and tea. Things in the coffee shop in the campus are always more expensive.
Question: Explain the woman’s opinion and why she holds that opinion.
Convergent evolution: After millions of years, animals changed and evolved to the response of environmental development.
In the lecture, the professor gives one example of two animals to illustrate this theory.
There is a pig-like animal named platypus in Africa and a kind of small animal named Echidna in Australia. They both have certain connection of eating the same insect living in the mud which can be so deep and hard. Overtime, they both develop very long and sticky tongues so that they can get the insects out of the mud.
【讲课要点】：The professor talks about the contributions of railroad to America and also gives us two examples to illustrate it.
The first example is that the business can sell their products to a further place and get more revenue. Like in the past, the business which sold clocks can only sell its clocks to local people. Overtime, as the expansion of railroad, the business can deliver their clocks to the entire country and sell to more people.
Another example is to make it possible to transport raw materials like coal. In the south of America, there were no factories due to the missing of coals because factories need energy provided by coals. As the expansion of railroad and coal utilization, people can transport coal from other regions to the south, so that more and more factories can be built up there.