Why are standard solutions of reductants less often used for titrations than standard solutions of o

Why does the man reject the woman' s request？

A．The company won' t recall goods already sold．

B．There isn' t anything wrong with the chicken．

C．The chicken isn' t sold at Brown' s．

D．The company policy does not allow this．

Why was it necessary to replace the old standard weight？

A．Someone spilled water on it.

B．Someone lost it.

C．It was made of low-quality metal.

D．The standard for measuring had changed.

听力原文：Why was it a must to replace the old standard weight？

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A．It was damaged.

B．It was made of low quality metal.

C．It was lost.

D．The standard of the country had changed.

Why does Standard and Poors lower Frances credit rating？

A．Because France doesn"t carry out any effective reforms.

B．Because the unemployment rate in France is too high.

C．Because France failed to boost its gloomy economy.

D．Because the government has borrowed too much money.

Write a letter to the company

informing them of the fall in the standard of their service

explaining why you are dissatisfied

describing the bad effect the service has had on your work

suggesting possible ways of improving the lunch service.

Why did the e-mail from an Iraqi catch the author's attention？

A．The subject line was not written in standard English.

B．It was not completely written in English.

C．The sender's name seemed familiar.

D．It had a short subject line.

Why does the article advise people to look at prize-winning books？

A．To copy the author's style.

B．To realise what a high standard needs to be reached.

C．To get an idea of what might be successful.

D．To find out how to trick publishers.

A.Because she is raised in a white family so that she cannot resist the influence of white culture

B.Because she is surrounded in everyday life by the symbols of white beauty

C.Because she is raised to hate her identity as black

D.Because her mother loves a white child

Why does the author mention the community of the Cayapas in Paragraph 3 and 4？

A．To cite an example of how ancient cultures have integrated with modem society.

B．To show how significant progress local people have made in their standard of living.

C．To denounce tourists for their vandalism and damage onto the local culture.

D．To demonstrate how tourism has helped preserve the indigenous culture.