[单项选择]Throughout history gold ______.
A. has played an important role in the world economy
B. has set the standard by which all other forms of money are valued
C. has brought out the worst in the human character
D. has been extremely difficult to find

[单项选择]Throughout history man has had to accept the fact ______ all living things must die.
A. that
B. which
C. in which
D. of which

[单项选择]Throughout history ........ different representations for numbers and for the basic process of counting.
A. ( have been many
B. ( them have been many
C. ( many
D. ( when many

[单项选择]Gold has been highly prized throughout the ages due chiefly to
A. it is scarce
B. so scarce is it
C. its scarcity
D. scarcity of it

[单项选择]

Gold ! Gold ! Gold ! Gold has enthralled man since the dawn of civilization. For centuries he braved arctic cold, tropic heat and inhuman privations to wrest gold from the earth. He used it for religious objects, sculpture, jewelry and as a symbol of wealth. Paradoxically, he often buried it — for use in the afterlife, as the pharaohs, did, or for safekeeping against the uncertainties of this life. Gold’s lustre and rarity, which implied its owner possessed great power, gave it a musical quality from the start. Gold was considered divine in ancient Greece and it was used to adorn temples and as an offering to the gods. Despite their reverence, the ancients were quick to recognize gold’s practical qualities, particularly its malleability, which made it ideal for jewelry. Even Cleopatra used gold ornaments to enhance her charm. However, it has been as a symbol of wealth — of nations as well as individuals — that gold has played its most dramatic role.
A. describe the mining of gold．
B. describe man's pursuit of gold.
C. determine the importance of gold．
D. discuss the role of gold.

[单项选择]The gold-exchange standard differs from the gold standard in that
A. it does not establish a generally accepted international medium of exchange.
B. it establishes no relationship between the value of a given currency and the value of gold.
C. the relationship it established between the value of any currency and the value of gold is indirect rather than direct.
D. it is a two-tiered rather than a single-tiered system.

[单项选择]The history of life on earth has been a history of between living things and their surroundings.
A. interaction
B. intersection
C. interference
D. intercourse

[单项选择]Disappearing forests throughout Latin America, Asia and Africa can cause ______.
A. immediate climate change
B. immediate economic damage
C. more forests fires
D. higher death rate

[单项选择]Although he designed buildings throughout the world, he was perhaps best known for his work in Japan.
A. 尽管他所设计的建筑遍布世界各地，但他最为人熟知的作品可能还是在日本。
B. 虽然他的建筑设计作品遍布全球，但是最了解他作品的可能还是日本人民。
C. 尽管他曾为世界上很多地方设计过建筑，但其最好的作品可能还是在日本。
D. 虽然作为一名建筑设计师他曾在世界各地工作过，但是他最了解的还是日本的情况。

[单项选择]Protessor Wu traveled and lectured throughout the country to （） education and professional skills so that women could enter the public world.
A. prosecute
B. acquire
C. advocate
D. proclaim

[单项选择]Professor Wu traveled and lectured throughout the country to ______education and professional skills so that women could enter the public world.
A. prosecute
B. acquire
C. advocate
D. proclaim

[单项选择]Throughout the period of darkness, Martin Saltzman and the eleven others were ______.
A. nervous
B. excited
C. calm
D. frightened

[单项选择]Those days people throughout the world were looking forward to the day of victory with great ______.
A. eager
B. eagerness
C. eagerly
D. eagery

[单项选择]Throughout his political career he has always been in the ____.
A. twilight
B. spotlight
C. streetlight
D. torchlight

[单项选择]The service operates 36 libraries throughout the country, while six libraries specially serve the countryside.
A. mobile
B. shifting
C. drifting
D. rotating

[单项选择]According to the passage, theorists throughout history have considered all of the following as possible reasons for the ornamentation of male plumage EXCEPT