What is the conversation mainly about?
A、
A standard unit for measuring weight.
B、
How to care for precious metals.
C、
The value of precious metals.
D、
Using the metric system.
【正确答案】
A
【答案解析】
单选题
How is the weight used?
A、
To measure amounts of rainfall.
B、
To check the accuracy of scales.
C、
To observe changes in the atmosphere.
D、
To calculate the density of other metals.
【正确答案】
B
【答案解析】
单选题
What does Doctor Thomas probably think about the cost of the new weight?
A、
It is too high for such a light weight.
B、
It is difficult to judge the value of such an object.
C、
It is a small amount to pay for so much precious metal.
D、
It is reasonable for an object with such an important function.
【正确答案】
D
【答案解析】
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