Why does the author mention "bog-iron" in paragraph 2？A．To demonstrate the availability of

A.AI is suffused with hype

B.Most jobs involve many tasks

C.Automation should also encourage demand

Why does the author mention a dog's bark？ ______

A．To exemplify poor memory.

B．To analyze a type of interruption.

C．To compare human memory with dog's memory.

D．To illustrate the lack of efficiency of rote rehearsal.

Why does the author mention Lincoln's axe？

A．To tell people that a simple tool can be repaired thoroughly.

B．To make people realize that immortality is not possible.

C．To illustrate the fact that the prospect of growing old is intolerable.

D．To suggest an anti-ageing approach that will reproduce itself.

Why does the author offer the example of one woman in paragraph 2？ ______.

A．To tell us that smokers will be over-energetic

B．To indicate that smokers have to participate in some activities to help quit smoking

C．To show that the smokers who quit will go to extremes

D．To claim that smokers will be very helpful once the quit smoking

Why does the author mention the California gold rush？

A．To explain the need for an increased supply of gold.

B．To indicate the extent.of United States mineral wealth.

C．To describe the mood when oil was first discovered.

D．To argue that gold was more valuable than oil.

A.The author is hopeful about freedom.

B.The author is cautious about self-government.

C.The author is skeptical of Greek civilization.

D.The author is proud of man’s capacity.

Why does the author give details about the percentages of Internet users in paragraph 3？

A．To prove that there are differences in opportunities among social groups

B．To argue for more Internet connections at all levels of society

C．To suggest that improvements in Internet access are beginning to take place

D．To explain why many people have Internet connections now

A． Because its database is disorganized.

B． Because the information required is specific.

C． Because its information is diverse and widespread.

D． All of the above.

A．To give an example

B．To make a comparison

C．To draw a conclusion

D．To introduce a new topic

Why does the author use the term "duck factory" in paragraph 4？

A．To point out that ducks are the region's main product for export

B．To emphasize the area's value as a breeding ground for ducks

C．To illustrate the tremendous growth of the poultry industry

D．To show that the potholes are important to the region's economy