单项选择题

New Foods and the New World
In the last 500 years, nothing about people - not their clothes, ideas, or languages- has changed as much as what they eat. The original chocolate drink was made from the seeds of the cocoa tree (可可树) by South American Indians. The Spanish introduced it to the rest of the world during the 1500's. And although it was very expensive, it quickly became fashionablE.In London, shops where chocolate drinks were served became important meeting places. Some still exist today.
The potato is also from the New WorlD.Around 1600, the Spanish brought it from Peru to Europe, where it soon was widely grown. Ireland became so dependent on it that thousands of Irish people starved when the crop failed during the 'Potato Famine (饥荒)'of 1845-1846, and thousands more were forced to leave their homeland and move to AmericA.
There are many other foods that have traveled from South America to the Old WorlD.But some others went in the opposite direction. Brazil is now the world's largest grower of coffee, and coffee is an important crop in Colombia and other South American countries. But it is native to Ethiopia, a country in Africa .it was first made into a drink by Arabs during the 1400's.
According to an Arabic legend, coffee was discovered when a person named Kaldi noticed that his goats were attracted to the red berries on a coffee bush. He tried one and experienced the 'wide-awake' feeling that one third of the world's population now starts the day with.
第 31 题 According to the passage, which of the following has changed the most in the last 500 years?
A.FooD.
B.Clothing.
C.Ideology.
D.LanguagE.

A.The
B.
There
C.it
D.
According
E.FooD.
B.Clothing.
C.Ideology.
D.LanguagE.

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The Smog (烟雾)For over a month, indonesia was in crisis. Forest fires raged out of control as the country suffered its worst drought for 50 years. Smoke from the fires mixed with sunlight and hot dry air to form. a cloud of smog. This pollution quickly spread and within days it was hanging over neighbouring countries including Malaysia, Singapore and ThailanD.When the smoke combined with pollution from factories and cars, it soon became poisonous (有毒的). Dangerous amounts of CO became trapped under the smog and pollution levels rosE.People wheezed (喘息) and coughed as they left the house and their eyes watered immediately.The smog made it impossible to see across streets and whole cities disappeared as grey soot (烟灰) covered everything. In some areas, water was hosed (用胶管浇)from high-rise city buildings to try and break up the smog.Finally, heavy rains, which came in November, put out the fires and cleared the air.But the environmental costs and health problems will remain. Many people from South-Eastern Asian cities already suffer from breathing huge amounts of car exhaust fumes (汽车排放的废气)and factory pollution. Breathing problems could well increase and many non-sufferers may have difficulties for the first timE.Wildlife has suffered too. In lowland forests, elephants, deer, and tigers have been driven out of their homes by smog.But smog is not just an Asian problem. In fact, the word was first used in London in 1905 to describe the mixture of smoke and thick fog. Fog often hung over the capital.Sometimes the smog was so thick and poisonous that people were killed by breathing problems or in accidents. About 4,000 Londoners died within five days as a result of thick smog in 1952.第 16 题 Indonesia was in crisis because of the drought.A.RightB.WrongC.Not mentioned

A.When
B.
The
C.
Finally,
D.But
E.
But
F.Sometimes
G.
A.Right
B.Wrong
C.Not

单项选择题

Dark Forces Dominate UniverseThe earth, moon, sun and all visible stars in the sky make up less than one percent of the universe, .Almost all the rest is dark matter and dark energy, unknown forces that___________(51) astronomers.Observations in recent years have changed the basic___________ (52) of how the universe evolved and have indicated how little is known about the major forces and substances that___________(53) our worlD.Astronomers now know that luminous发光的) matter---stars, planets and hot gas--accounts___________ (54)only about 0.4 percent of the universE.Non-luminous components, such as black holes and intergalactic (星系间的) gas, ___________ (55)up 3.6 percent. The rest is either dark matter, about 23 percent, or dark energy, about 73 percent.Dark matter, sometimes___________(56) 'cold dark matter,' has been known for some timE.Only recently have researchers come to understand the key role it___________(57) in the formation of stars, planets and even peoplE.'We ___________ (58) our very existence to dark matter,' said physicist Paul Steinhardt and a co-author of a review on dark matter which (59) not long ago in the journal SciencE.'Dark matter dominated the structure___________ (60) in the early universe,'Steinhardt saiD.'For the first few billion years dark matter contained most of the mass of the universE.You can think of ordinary matter ___________ (61) a froth (泡沫) of an ocean of dark matter. The dark matter clumps (结成块) and the ordinary matter falls into it.That___________ (52) to the formation of the stars and galaxies (星系.'Without dark matter, 'there would be virtually no structures in the universE.'The nature of dark matter is___________ (63). It cannot be seen or detected directly.Astronomers know it is there because of its___________ (64) on celestial (天体的)objects that can be seen and measureD.But the most dominating force of all in the universe is called dark energy, a recently ___________ (65) power that astronomers say is causing the galaxies in the universe to separate at a faster and faster speeD.第 51 题A.worryB.moveC.puzzleD.reject

A.Almost
B.
Observations
C.
Astronomers
D.4
E.6
F.
Dark
G.
'We
H.
'Dark
I.'For
J.That___________
K.'
Without
L.'
The
M.Astronomers
N.
But
O.worry
P.move
C.puzzle
D.reject