单项选择题

Until the late nineteenth century,there was no uniform system of time-keeping in the United States.

A．personal
B．efficient
C．consistent
D．practical

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单项选择题

Penguins do not suffer from the cold in Antarctica because their feathers secrete protective oil.

A．hide
B．warm
C．produce
D．absorb

单项选择题

He spoke so quickly that it was difficult to take down what he was saying.

A．translate
B．record
C．follow
D．interpret

单项选择题

In prehistoric times people seldom stayed anywhere for very long because their food supply usually ran out.

A．became depleted
B．was stolen
C．escaped
D．spoiled

单项选择题

Trading companies put up the money for the first English colonies in North America.

A．supplied
B．earned
C．needed
D．borrowed

单项选择题

In the Navaho household,grandparents and other relatives play indispensable roles in raising children.

A．dominant
B．exemplary
C．essential
D．demanding

单项选择题

His job was to look after the animals.

A．search for
B．care for
C．follow
D．trap

单项选择题

Until the late nineteenth century,there was no uniform system of time-keeping in the United States.

A．personal
B．efficient
C．consistent
D．practical

单项选择题

The osprey flies above the water and when it spots a fish it swoops down to catch it.

A．drops
B．sees
C．wants
D．selects

单项选择题

Most sound vibrations arrive at the eardrum by way of the auditory canal.

A．search for
B．reach
C．tickle
D．whisper to

单项选择题

In 1975 the United States Army began to assign women to positions previously classified as having combat status.

A．secretly
B．genuinely
C．formerly
D．officially

单项选择题

Ruth Benedict's highly popular book Patterns of Culture stressed the role of culture in personality formation.

A．overly
B．very
C．fairly
D．relatively

单项选择题

In the western United States one can still find posts to which nineteenth-century cowboys hitched their horses.

A．tied
B．led
C．pulled
D．brought

单项选择题

Because the sale of bonds is a convenient means of raising capital, corporations often issue bonds as well as stocks.

A．as good as
B．as substitutes for
C．in addition to
D．instead of

单项选择题

Insects thrive all over, from the hottest deserts to the snow-clad peaks of lofty mountains.

A．silently
B．totally
C．everywhere
D．overhead

单项选择题

No part of New Hampshire is far from water.

A．mountain
B．town
C．section
D．village