Questions 4 to 7 are based on the following
conversation. At the end of the conversation, you will be given 20 seconds to
answer the questions. Now listen to the
conversation. What does Dr. Thomas probably think about the cost of the new weight
A.It is a small amount to pay for so much precious metal. B.It is difficult to judge the value of such an object. C.It is reasonable for an object with such an important function. D.It is too high for such a light weight.