Listen again to part of the lecture.Then answer the question. Why does the professor say this:
A.
To describe the shape of the arch
B.
To define the concept of lateral thrust
C.
To compare two types of physical force
D.
To explain why arches must be large
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参考答案:
举一反三
【简答题】阅读理解。 WELCOME TO YOUR FREE ISH MEMBERSHIP Your Membership International Students House is a unique, cultural and recreational centre providing a wide programme of s for students 310 days a year. ...
【简答题】WELCOME TO YOUR FREE ISH MEMBERSHIP Your Membership International Students House is a unique, cultural and recreational centre providing a wide programme of s for students 310 days a year. Locate...