听力原文:What is Dr. Thomas' opinion of the cost of the new weight?(26)A.It is too expensi
听力原文:What is Dr. Thomas' opinion of the cost of the new weight?
(26)
A.It is too expensive for such a metal.
B.It is priceless for such an object.
C.It is reasonable for such an important object.
D.It is too cheap for such a precious metal.