Official 29 Lec 4
Question 2 of 6
Why does the student mention climbing a ladder?

A.

To demonstrate his familiarity with certain new types of technology

B.

To make sure he understands the point the professor is making

C.

To raise an objection to the professor’s claims about escape velocity

D.

To provide a humorous example for the other students’ amusement

正确答案:B

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