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A．Slavery and the treatment of the black people in America.
B．The Wheatley family, including their slaves.
C．The life of America's first black poet.
D．The achievements of Phyllis Wheatley.

A．consideration
B．disregard
C．punishment
D．behavior

A．One.
B．Two.
C．Three.
D．Four.

A．was not much older than Phyllis
B．wanted to become a teacher
C．was comparatively well educated
D．decided to take charge of Phyllis's education

A．ultimately
B．slowly
C．reluctantly
D．gradually

A．She wrote her first poem when in her teens.
B．She married in 1771.
C．She became a teacher.
D．She was able to get her poems published.

A．publishers
B．poems
C．children
D．black people

A．did not improve her health
B．was for business reasons
C．led to books of her poems being available in America
D．led to the publication of her poems because the English were more interested in religious and moral subjects

A．welcoming
B．stating
C．bemoaning
D．praising

A．She would have been more recognized as a poet if she had not been black.
B．She would have written poetry if she had stayed in Africa.
C．She went unrecognized as a poet during her lifetime.
D．She only wrote religious poetry.

A．The relationship between a plant's roots and its shoots.
B．What can be learned by growing roots in isolation.
C．How plants can be grown without roots.
D．What elements are necessary for the growth of plants.

A．plant physiologists
B．solutions
C．laboratory flasks
D．roots

A．quite natural
B．sugar, minerals and vitamins
C．some rare vitamins
D．organic nitrogen compounds

A．make proteins
B．obtain fresh air
C．produce inorganic nitrogen
D．carry out activities without energy

A．A biochemical process.
B．The tip of a root.
C．A chemical compound.
D．A type of plant cell.

A．mature
B．wild
C．whole
D．tiny

A．unavoidable
B．predictable
C．necessary
D．successful

A．"export" protein in the form of amino acids
B．do not require water
C．have begun photosynthesizing
D．obtain organic compounds from the root

A．The results of two experiments are compared.
B．A generalization is made, and several examples of it are given.
C．The findings of an experiment are explained.
D．A hypothesis is presented, and several means of proving it are suggested.

A．A newsletter.
B．A magazine.
C．A storybook.
D．A novel.

A．natural flavorings and fragrances are not quite dear
B．the limitation of natural flavorings and fragrances is clear
C．the supply of natural flavorings and fragrances is adequate to meet the demand
D．the cost of producing natural flavorings and fragrances is high

A．Natural rose fragrance is 100 times more expensive to produce than artificial rose fragrance.
B．The most important ingredient in a rose fragrance is obtained from natural rose oil at a low cost.
C．A different synthetic substance can be made for 1% of the cost.
D．Natural rose oil costs the same as its fragrances.

A．2000
B．1953
C．1909
D．1810

A．aromatic ingredient in vanilla
B．vanilla
C．aromatic ingredient in wild cherry
D．the flavor of fresh coffee

A．make double
B．make a copy of
C．produce something equal to
D．take from

A．As an example of complex substances having not been duplicated satisfactorily.
B．Because the coffee fragrance is hard to produce.
C．To conclude the passage.
D．The smell of fresh coffee is inviting.

A．Upon identifying the basic components of it
B．Once chemically analyzed
C．When gas chromatography is used
D．If spectroscopy is adopted

A．vanillin is easier to synthesize than benzaldehyde
B．not all synthetic flavors are harmless
C．in general, the less components there are in a fragrance, the harder it is to synthesize
D．synthesized substances must be tested for safety only if they are used in food

A．How to Synthesize Fragrances
B．Synthetic Substances Are Easy to Make
C．Natural Flavorings and Fragrances
D．Synthetic Flavors and Fragrances

A．Synthetic fragrances can be used to make a used car smell like a new one.
B．Synthetic flavors and fragrances have added to the varieties of products.
C．Lemon soap is made out of some delicious lemon.
D．It is likely that a bottle of orange juice is synthesized.

A．people migrate like animals
B．only birds migrate
C．the female fur seals migrate only to the Gulf of Alaska
D．not all mammals migrate

A．migratory mammal
B．place where animals migrate
C．migrating bird
D．person who associates migration with birds

A．caribou
B．fin whale
C．reindeer
D．Alaska fur seal

A．In the Pribilot Islands.
B．In the Bering Sea.
C．In southern California.
D．In northern Canada.

A．mothers and the young
B．fathers and the young
C．parents and the young
D．seals and whales

A．Whales breed in winter.
B．Young whales are given birth in cold waters.
C．Alaska fur seals give birth to the young only in one area.
D．Alaska fur seals are born in warm weather.

A．Whales migrate to breed and give birth to their young.
B．Whale-watching in Boston in summer is attracting.
C．Seals breed in the north before migration.
D．Reindeer feed on grass.

A．tiny plants and animals in the sea
B．the grassy slopes of northern Canada
C．their young in cold winter
D．the abundant seafood in tropic waters

A．Four.
B．Three.
C．Two.
D．One.

A．Three Types of Whales
B．Birds Migration
C．Mammals Also Migrate
D．Several Kinds of Migration

A．heavy e-mail traffic
B．fraudulent e-mail messages
C．large volume of messages
D．increasing amount of unwanted e-mail

A．It costs money to receive them.
B．It's free to store them.
C．It takes time to access them.
D．It takes time to throw them away.

A．cause companies to fail in business
B．cause wanted e-mail messages to lose
C．damage the credit of a company
D．do good to a small company

A．decent
B．instructional
C．sexual
D．commercial

A．Raising their cost.
B．Raising the Internet speed.
C．Improving their business.
D．Attracting investment.

A．reveal
B．hide
C．deliver
D．post

A．cheat
B．introduce
C．provide
D．harm

A．a machine that can be attached to your computer
B．a button that you can make a choice to read or not to read
C．a software that you can play a computer game
D．an e-mail that says some good words to you

A．harmful virus
B．unpleasant news
C．advertisements
D．adult jokes

A．the government takes action
B．a new technology is adopted
C．more people are aware of the problem
D．joint efforts are made and new technology is used