托福TPO46听力题目+答案+MP3音频下载(2)

A To find an acceptable alternative to ultramarine pigment B To demonstrate that blue should be used only in certain paintings C To contradict a common belief about the use of blue in a painting D To protest the high costs of painting with most blue pigments

3. What does the professor imply about smalt as a substitute for lapis lazuli? A It eventually became as expensive as lapis lazuli. B It was used frequently throughout the nineteenth century. C It was not of an acceptable quality for many artists.

D It was seen as a better substitute for lapis lazuli than azurite was.

4. What two points does the professor make about the process of turning lapis lazuli into ultramarine?(Click on 2 answers.)

A It took a lot of time. B It required expensive tools. C It did not produce much pigment. D It was perfected by the French.

5. Why does the professor mention the French government?

A To indicate who sponsored the digging of additional lapis lazuli mines B To emphasize the importance of developing an affordable blue pigment

C To point out that artists were not permitted to use certain stones to make pigments D To question the government’s use of public funds to support the arts

6. What does the professor imply when he says this:

A He is not convinced the Egyptians made the first synthetic pigment B He is impressed by the Egyptians’ accomplishment. C The process the Egyptians used is now widely known.

D The Egyptian pigment was of lower quality than today's pigments. Lecture 4

1. What does the professor mainly discuss?(Click on 2 answers.) A Reasons for fluctuations in the price of copper B Some important attributes of sopper C The production of coins from copper and zinc D The possible future of the United States penny

2. What arguments in favor of keeping the penny in circulation does the professor emphasize?(Click on 2 answers.)

A Some people are emotionally attached to pennies. B Pennies cost very little to produce. C The price of consumer goods could rise.

D The copper industry’s profits depend on the production of pennies.

3. What does the professor say about the negative seigniorage of the nickel? A The United States government is looking for ways to reduce it. B It is significantly greater than that of the penny. C It is less of a problem than some people believe it to be. D Merchants benefit from it more than consumers do.

4. Why does the professor mention the trumpet and trombone?

A To compare the sound-generating properties of copper with those of zinc B To exemplify the benefits of mixing copper with other metals C To point out that copper can be shaped into a variety of forms D To point out that objects containing copper can shine like gold

5. What does the professor imply about the green patina that sometimes appears on copper? A It is difficult to remove by conventional means. B It adds to the beauty of objects made of copper. C It serves a useful function.

D It reduces the conductivity of copper.

6. Why does the professor say this:

A He wants the woman to realize her own mistake.

B He wants the woman to support her point with precise numbers. C He realizes he neglected to mention an important detail. D He shares the woman’s concern about the copper industry

托福TPO46听力答案

CONVERSATION1:1-4.CADA 5.AC CONVERSATION2:1.B 2.DE 3-5.CAB LECTURE1:1-2.CB 3.BD 5-6.DA LECTURE2:1-6.BCBABD LECTURE3:1-3.DCC 4.AC 5-6.BB LECTURE4:1.BE 2.AC 3-6.BBCA

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