[填空题]Questions 47 to 56 are based on the following passage.
During sleep, the fatigue of the body disappears and recuperation (恢复) begins. The tired mind gathers new energy. Once awake, the memory improves, and annoyance and problems are seen in a better (47) .
Some adults require little sleep; others need eight to ten hours in every twenty-four. Infants sleep sixteen to eighteen hours daily and, as they grow older, the amount gradually diminishes Young students may need twelve hours; university students may need ten. A worker with a physically (48) job may also need ten, whereas an (49) worker under great pressure may manage on six to eight. Many famous people are reputed to have (50) little sleep.
Whatever your (51) need, you can be sure that by the age of thirty you will have slept for a total of more than twelve years. By that age you will also have developed a sleep (52) : a favorite hour, a favorite

[填空题] Questions 47 to 56 are based on the following passage.
The way in which people use social space reflects their social relationships and their ethnic identity. Early immigrants to America from Europe brought with them a (47) style of living, which they retained until late in the 18th century. Historical records document a group-Oriented (48) , in which one room was used for eating, entertaining guests, and sleeping. People ate soups from a communal pot, (49) drinking cups, and used a common pit toilet. With the development of ideas about individualism, people soon began to shift to the use of (50) cups and plates; the eating of meals that included meat, bread, and vegetables (51) on separate plates; and the use of private toilets. They began to build their houses with separate rooms to (52) guests — living rooms, separate bedrooms for sleeping, separate work areas — kitchen, laundry room, and separate ba

[单项选择] Questions 17 to 20 are based on the following passage. At the end of the passage, you will be given 20 seconds to answer the questions.
Now listen to the passage.

When were the first battles of the revolution fought
A. 1772.
B. 1777.
C. 1775.
D. 1774.

[单项选择]Questions 36 to 45 are based on the following passage. As an Alaskan fisherman. Timothy June, 54, used to think that he was safe from industrial pollutants（污染物）at his home in Haines-a town with a population of 2,400 people and 4,000 eagles, with 8 million acres of protected wild land nearby. But in early 2007, June agreed to take part in a 36 of 35 Americans from seven states. It was a biomonitoring project, in which people’s blood and urine（尿）were tested for 37 of chemicals-in this case, three potentially dangerous classes of compounds found in common household 38 like face cream, tin cans, and shower curtains. The results- 39 in November in a report called“Is It in Us”by an environmental group-were rather worrying. Every one of the participants, 40 from an Illinois state senator to a Massachusetts minister, tested positive for all three classes of pollutants. And while the 41 presence of these chemicals does not 42 indicate a health risk, the

[单项选择]Questions 62 to 66 are based on the following passage.
If a mother pushes her small son in a swing (秋千), giving only a light force each time he returns, eventually he will be swingirg.quite high. The child can do this for himself by using his legs to increase the motion, but both the mother’s push and the child’s leg movements must occur at the proper moment, or the extent of the swing will not increase. In physics, increasing the swiag is increasing the amplitude (振幅); the length of the rope on the swing determines its natural oscillation (摆动) period. This ability of an object to move periodically or to vibrate when stimulated by a force operating in its natural period is called resonance.
Resonance is observed many times without consciously thinking about it; for example, one may find an annoying vibration or shimmy in an automobile, caused by a loose engine mount vibrating with increasing amplitude because of an out of-round tire. The bulge (凸出部分) on t
A. revolution
B. movement
C. frequency
D. amplitude

[单项选择]Questions 11 to 13 are based on the following passage. At the end of the conversation, you will be given 15 seconds to answer the questions.
Now listen to the passage.
Why did John Hailor and William Liburdy, doctors in Boston, study 1,100 children
A. To examine whether these children were healthy.
B. To find out whether their mothers had smoked.
C. To find out why these children suffered breathing problems and lung disease.
D. To look into the effect that mother’s smoking had on their children.

[单项选择]Questions 14 to 17 are based on the following passage. At the end of the passage, you will be given 20 seconds to answer the questions.
Now, listen to the passage.

According to the speaker, sleeping pills may ______.
A. ease insomnia
B. help keep the body’s natural rhythm
C. lead to worse insomnia
D. have no effect at all

[单项选择]Questions 18 to 20 are based on the following passage. At the end of the passage, you will be given 15 seconds to answer the questions.
Now, listen to the passage.


Just like the author stated here, ______.
A. the brain of an elephant accounts for 1/50 of his total weight
B. many kinds of animals have brains larger than men have
C. man’s brain seldom weighs much over three pounds
D. in proportion to his total weight, man’s brain is the largest of animal brains

[单项选择]Questions 15 to 17 are based on the following passage. At the end of the passage, you will be given 15 seconds to answer the questions.
Now, listen to the passage.


Radiation ______.
A. is good for crops
B. can poison food and water
C. is not harmful to man
D. is useful to man

[单项选择]Questions 57 to 61 are based on the following passage.
The current emergency in Mexico City that has taken over our lives is nothing. I could ever have imagined for me or my children. We are living in an environmental crisis, an air-pollution emergency of severity. What it really means is that just to breathe here is to play a dangerous game with your health.
As parents, what terrorizes us most are reports that children are at higher risk because they breathe more times per minute. What more can we do to protect them and ourselves Our pediatrician’s(儿科医师的) medical recommendation was simple：abandon the city permanently. We are foreigners and we are among the small minority that can afford to leave. We are here because of my husband’s work. We are fascinated by Mexico—its history and rich culture. We know that for us, this is a temporary danger. However, we cannot stand for much longer the fear we feel for our boys. We cannot stop them from br
A. sell
B. transport
C. place
D. deliver

[单项选择]Questions 52 to 56 are based on the following passage.
Most people think of lions as strictly African beasts, but only because they’ve been killed off almost everywhere else. Ten thousand years ago lions spanned vast sections of the globe. Now lions hold only a small fraction of their former habitat, and Asiatic lions, a subspecies that spit from African lions perhaps 100000 years ago, hang on to an almost impossibly small slice of their former territory.
India is the proud steward of these 300 or so lions, which live primarily in a 560-square-mile sanctuary(保护区). It took me a year and a half to get a permit to explore the entire Gir Forest—and no time at all to see why these lions became symbols of royalty and greatness. A tiger will hide in the forest unseen, but a lion stands its ground, curious and unafraid—lionhearted. Though they told me in subtle ways when I got too close, Gir’s lions allowed me unique glimpses into their lives during
A. the present sanctuary is not large enough
B. scientists want to do more research on them
C. they have killed many people
D. the forest is shrinking in size

[单项选择]Questions 14 to 16 are based on the following passage. At the end of the passage, you will be given 15 seconds to answer the questions.
Now listen to the passage.
According to the passage, how did American people receive Thorpe when he came back from Stockholm in 1912
A. They held grand banquets in his honor.
B. They welcomed him with parades and celebration.
C. They gave him the title of "the highest type of citizen".
D. They made him a professional athlet