In which paragraph does the author state his purpose of writing？A．The third paragraph.B．Th

Which of the following in the first paragraph does NOT indicate crowds of people？A．Thousan

What does the word precursor in the context in the second paragraph mean？

What does the experiment lnentioned in paragraph 4 prove？

What does the word " That" refer to in the last sentence in Paragraph 6？A．The troubling bu

In order to relieve the financial pressure brought by student loans, which option the auth

What does the experiment mentioned in paragraph 4