21. What does the woman decide to do?
C)。【解析】四个选项均为不定式,由此可以推测,本题考查的内容可能是关于某个决定。女士说如果可行,就决定退课。可见女士打算放弃这门课程,故正确答案为C)。
Conversation Two
W: Dr.Thomas? This is Keet Bradley from the daily news.Id like to ask you some questions about the new official standard weight that you purchased.
M: Id be happy to help you. What would you like to know?
W: First of all, how was the standard weight used?
M: Well, the people in our department use it to check the scales all over the country. The department of weights and measures, we are a government agency. Its our responsibility to see that all the scales measure a kilogram accurately so this is the way we use to adjust the scales.
W: How did you check the scales before?
M: We have an old standard weight that we used to use.It had to be replaced because it was imprecise. You see it was made of poor quality metal that was too porous. It absorbed too much moisture.
W: Oh. So when the weather was humid it weighed more and when it was dry it weighed less.
M: Exactly. And that variation can affect the standards of the whole country. So our department had the new weight made out of higher quality metal.
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