2010年6月大学英语四级真题
Questions 47 to 56 are based on the following passage.
When we think of green buildings, we tend to think of new ones – the kind of high-tech, solar-paneled masterpieces that make the covers of architecture magazines. But the U.S. has more than 100 million existing homes, and it would be 47. G） incredibly wasteful to tear them all down and 48. K） replace them with greener versions. An enormous amount of energy and resources went into the construction of those houses. And it would take an average of 65 years for the 49. J） reduced carbon emissions from a new energy-efficient home to make up for the resources lost by destroying an old one. So in the broadest 50. L） sense, the greenest home is the one that has already been built. But at the same time, nearly half of U. S. carbon emissions come from heating, cooling and 51. H） powering our homes, offices and other buildings. "You can't deal with climate change without dealing with existing buildings," says Richard Moe, the president of the National Trust.
With some 52. D） exceptions, the oldest homes tend to be the least energy-efficient. House
s built before 1939 use about 50% more energy per square foot than those built after 2000, mainly due to the tiny cracks and gaps that 53. E） expand over time and let in more outside air.
Fortunately, there are a 54. O） vast number of relatively simple changes that can green older homes, from 55. F） historic ones like Lincoln's Cottage to your own postwar home. And efficiency upgrades (升级) can save more than just the earth; they can help 56. I） protect property owners from rising power costs.
注意：此部分试题请在答题卡2上作答。
A) accommodations
B) clumsy
C) doubtful
D) exceptions
E) expand
F) historic
G) incredibly
H) powering
I) protect
J) reduced
K) replace
L) sense
M) shifted
N) supplying
O) vast
2011年6月大学英语四级真题
Questions 47 to 56 are based on the following passage.
The popular notion that older people need less sleep than younger adults is a myth, scientists said yesterday.
While elderly people 47 N） tend to sleep for fewer hours than they did when they were younger, this has a(n) 48 L） negative effect on their brain's performance and they would benefit from getting more, according to research.
Sean Drummond, a. psychiatrist (心理医生) at the University of California, San Diego, said older people are more likely to suffer from broken sleep, while younger people are better at sleeping 49 H） efficiently straight through the night.
More sleep in old age, however, is 50 B） associated with better health, and most older people would feel better and more 51 A） alert if they slept for longer periods, he said.
“The ability to sleep in one chunk (整块时间) overnight goes down as we age but the amount of sleep we need to 52 J） function well does not change,” Dr Drummond told the American Association for the Advancement of Science conference in San Diego.
“It's 53 F） definitely a myth that older people need less sleep. The more healthy an older adult is, the more they sleep like they did when they were 54 O） younger. Our data suggests that older adults would benefit from 55 E） continuing to get as much sleep as they did in their 30s. That's 56 G） different from person to person, but the amount of sleep we had at 35 is probably the same amount as we need at 75.”
注意：此部分试题请在答题卡2上作答。
A) alert                I) formally
B) associated          J) function
C) attracting          K) mixed
D) cling              L) negative
E) continuing          M) sufficient
F) definitely          N) tend
G) different          O) younger
47. tend to 固定搭配；表示“倾向于；”符合句意；
48. 空格后是effect， 前面是a(n)， 由此可见，该处需要填入一个形容词；题目给出的形容词有negative, sufficient, younger；根据前后语意，填入negative最为恰当，表示“少的睡眠时间对大脑的活动有负面的影响。”
49. 根据推测，该处应该填入一个副词，题目给出的副词有efficiently, definitely, formally；前面提到，老年人在睡觉的时候更容易被打断，而后面用while提出一个对比的概念，年轻人相比起来能获得更_______ 的睡眠；综合起来，选用efficiently（最有效率的）最为准确。
50. be associated with 固定搭配；表示“与…联系在一起”；本句话表示“更多的睡眠通常都与健康度联系在一起”；
51. 先看整句话的含义，“如果他们能睡更长的时间，他们的感觉应该会更好以及…”那么，该处应该填入一个褒义词，选择alert比较恰当，表示“更加警觉，机灵”；
alert怎么读52. 根据判断，此处应该填入一个动词，剩下的动词有cling, function；整句话的意思是“当我们上了年纪的时候，我们一觉睡到天亮的能力下降了，但是，我们需要…的睡眠量并没有改变；”空格后的单词是well， cling 在这里并不合适，一般与to连用；选用function 最为适合；
53. 作者在首段已经提出这个观点是一个myth，那么显而易见最后一段中出现的myth是作为一种强调手段，应填入definitely；
54. 空格的前面是 when they were…， “当他们年轻的时候”；应填入younger；
55. 本句的意思是“我们的数据显示老年人将从…获益；”空格的后面是“得到和他们在三十多岁的时候能得到的睡眠一样多”；根据上下文意思，该处应填入“continuing”；
56. different from 固定搭配；表示“和…不同”；
2010年12月大学英语四级真题
Questions 47 to 56 are based on the following passage.
What determines the kind of person you are? What factors make you more or less bold, intelligent, or able to read a map? All of these are influenced by the interaction of your genes and the environment in which you were 47. M) raised . The study of how genes and environment interact to influence 48. L) psychological activity is known as behavioral genetics. Behavioral genetics has made important 49. E) contributions to the biological revolution, providing information about the extent to which biology influences mind, brain and behavior.

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