Why does the author use the term hard-wired in describing the sense of smell and the brain？
A. To describe the texture and feel of the olfactory nerve
B. To emphasize the close connection between smell and the brain
C. To compare the power of smell with that of other senses
D. To explain how the sense of smell evolved in early humans
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The first colonists returned to England mainly because
A. they were attacked by the Indians.
B. they didn't have adequate supplies.
C. they had no passion for their new home at all.
D. they didn't receive enough financial aid.
The word which in paragraph 6 refers to
A. learning
B. study
C. list
D. smell
Developers are turning to the skyscraper In London because
A. the weather there covers the city with a gray ceiling.
British are inclined to understatement.
C. British love the countryside and gardens.
D. the city's population and its prominence grow increasingly.
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
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