2015职称英语理工类B级考试真题
Sure enough,Giussani found that the average birthweight of babies in La Paz was significantly lower than in Santa Cruz.This was true in both high and low-income families.Even babies born to poor families in Santa Cruz were heavier on average than babies born to wealthy families in lofty La Paz."We were very surprised by this result，"says Giussani.
The results suggest that babies born at high altitude are deprived of oxygen before birth."This may trigger the release or suppression of hormones that regulate growth of the unborn child，"says Giussani.
His team also found that high-altitude babies tended to have relatively larger heads compared with their bodies.This is probably because a fetus starved of oxygen will send oxygenated blood to the brain in preference to rest of the body.
Giussani wants to find out if such babies have a higher risk of disease in later life.People born in La Paz might be prone to heart trouble in adulthood,for example.Low birthweight is a risk factor for coronary(冠状的) heart disease.And newborns with a high ratio of head size to body weight are often predisposed to high blood pressure and strokes in later life.
41.What does the new study discover?
A.Babies born to wealthy families are heaver.
B.Women living at high altitude tend to give birth to underweight babies.
C.Newborns in cities are lighter than average.
D.Low-altitude babies have a high risk of heart disease in later life.
参考答案：B
42.Giussani and his team are sure that _____.
A.babies born in Lance Paz are on average lighter than in Santa Cruz.
B.people living at high altitudes tend to give birth to underweight babies.
C.the birthweight of babies born to wealthy families is Santa Cruz.
D.mothers in La Paz are commonly under-nourished.
参考答案：A
43.It can be inferred from what Giussani says in Paragraph 4 that_____.
A.the finding was unexpected
B.he was very tired.
C.the study took longer than expected.
D.he was surprised to find low-income families in La Paz.
参考答案：A
44.The results of the study indicate the reason for the underweight babies is _____.
A.lack of certain nutrition.
B.powerty of their mother.
C.different family backgrounds.
D.reduction of oxygen levels.
参考答案： D
45.It can be learned about form the paragraph that_____.
A.high-altitude babies tend to have high blood pressure in later life.
B.under-weight babies have a shorter life span.
C.babies born to poor families lack hormones before birth.
D.new born wealthy families have larger heads compared with their bodies.
参考答案：B
第五部分：补全短文
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Saving a City's Public Art
Avoiding traffic jams in Los Angeles may be impossible,but the city's colorful freeway murals(壁画)can brighten even the worst commute.Paintings that depict(描述)famous people and historical scenes cover office buildings and freeway walls all across the city.With a collection of more than 2，000 murals,Los Angeles is the unofficial mural capital of the world.
But the combination of graffiti(涂鸦),pollution,and hot sun has left many L.A.murals in terrible condition._____(46)In the past,experts say,little attention was given to caring for public art.Artists were even expected to maintain their own works,not an easy task with cars racing by along the freeway.
_____(47)The work started in 2003.So far,16 walls have been selected,and more may be added later.
Until about 1960,public murals in Los Angeles were rare.But in the 1960s and 1970s,young L.A.artists began to study early 20th-century Mexican mural painting._____(48)
The most famous mural in the city is Judith Baca's "The Great Wall,"a 13-foot-high(4-meter-high)painting that runs for half a mile (0.8 kilometer) in North Hollywood，_____(49)it took eight years to complete—400 underprivileged teenagers painted the designs—and is probably the longest mural in the world.
One of the murals that will be restored now is Kent Twitchell's "Seventh Street Altarpiece."which he painted for the Los Angeles Olympics in 1984._____ (50)Twitchell said,"It was meant as a kind of gateway through which the traveler to L.A.must drive.The open hands represent peace.”
Artists often call murals the people's art.Along a busy freeway or hidden in a quiet neighborhood,murals can reach people who would never pay money to see fine art in a museum,"Murals give a voice to the silent majority，"said one artist.