Want to be a happy married couple? Consider having kids．
A new study found that having children boosts happiness．And the more, literally, the merrier．
But unmarried couples shouldn’t expect to find greater happiness through child-raising．The study, published in the Oct．14 online edition of the Journal of Happiness Studies, suggests that having children has little or no effect on boosting happiness among couples who aren’t hitched(和谐)．
The findings contradict previous research that suggested that having more offspring doesn't lead to greater happiness and might even make people less satisfied with their lives．One theory behind the conclusion is that parents don’t receive many rewards in return for the hard work of raising children．
The new study, however, notes that parents say children are one of the most important things in their lives, if not the most important．
The study found that life satisfaction for married people -- women especially -- goes up the more kids they have．Single, separated and co-habiting people, by contrast, report negative experiences．
“One is tempted to advance that children make people rich under the ‘right conditions’ -- a time in life when people feel that they are ready, or at least willing, to enter parenthood,” Dr．Luis Angeles, of the University of Glasgow in Scotland, said in a news release from the journal’s publisher．“This time can come at very different moments for different individuals, but a likely signal of its approach may well be the act of marriage．”
57．The underlined word “offspring” in the fourth paragraph can be replaced by _____．
A．generation       B．children           C．mothers      D．marriage
58．The best title of this passage should be _______．
A．Children Are the Source of Happiness
B．Are You Happy Married Couple?
C．Married with Children Paves Way to Happiness
D．The Right Conditions of Having Children
59．Which of the following can be inferred from the passage?
A．The more children women have, the happier they are．
B．The more children the married women have, the more unsatisfied they become．
C．Raising kids can give any person happiness．
D．Without marriage, one woman had better not raise kids．
60．In the passage, the underlined part ‘right conditions’ refers to _______．
A．a time when the couple are ready and willing to become parents
B．the situation where the family is rich enough to raise a child
C．the situation where the couple are very happy
D．a time when the couple thinks raising children can boost happiness

       Active participation in the classroom is not only accepted but also expected of the student in many courses. Some professors base part of the final grade on the student’ s oral participation. Although there are formal lectures during which the student has a passive role (I.e., listening and taking notes), many courses are organized around classroom discussions, students questions, and informal lectures.

       A professor’s teaching style is another factor that determines the degree and type of student participation. Some professors prefer to control discussion while others prefer to guide the class without controlling it. Many professors encourage students to question and challenge their ideas. Students who make statements that contradict the professor’s point of view should be prepared to prove their positions.

       Ideally, the teacher-student relationship at universities is characterized by trust. The “honor system” demands that the student be honest in all areas of school work. Thus, cheating on tests, presenting others’ ideas as original, and turning in homework done by someone else are all forbidden.

       Violation of the honor system can result in a student’s failing a course, having a record of the violation placed in the student’s school files, or even being driven out from the university. Students who cheat may lose the respect of other students, particularly those who study for exams and work independently. When leaving the classroom while students are taking an exam, an instructor may or may not say, “I expect you all to obey the honor system.” Even if the words are not stated, the student is expected to work alone and not to share answers.

1.    In many courses, teachers__________.

       A. allow the students to participate

       B. require the students to participate

       C. both A and B

       D. neither A nor B

2.    If a student does not agree with the professor in a lecture, the student is encouraged to    __________.

       A. remain silent

       B. challenge the professor

       C. leave the class

       D. tell the professor immediately that he is wrong

3.    If a professor believes in the “honor system,” it implies his _________.

       A. suspicion of the students

       B. distrust of the students

       C. trust in the students

       D. pride in the students

4.    Violations of the honor system do not include __________.

       A. cheating

       B. failing a course

       C. sharing answers

       D. handing in homework done by another student

Beijing had its biggest snowfall since 1951. Britain is suffering through its longest cold snap (寒潮) since 1981. And freezing weather is hitting the Deep South, including Florida’s orange groves and beaches.
Whatever happened to global warming?
Such weather doesn’t seem to fit with warnings from scientists that the Earth is warming because of greenhouse gases. But experts say the cold snap doesn’t contradict global warming at all—it’s just a temporary phenomenon in the long-term heating trend. “It’s part of natural variability,” said Gerald Meehl, a senior scientist. With global warming, he said, “we’ll still have record cold temperatures. We’ll just have fewer of them.”
Scientists say man-made climate change does have the potential to cause more frequent and more severe weather extremes. But experts did not connect the current cold snap to climate change.
So what is going on?
“We basically have seen just a big outbreak of Arctic air over populated areas of the Northern Hemisphere”, Arndt said.
In the atmosphere, large rivers of air travel roughly west to east around the globe between the Arctic and the tropics. This air flow acts like a fence to keep Arctic air restricted. But recently, this air flow has become bent into a zigzag (之字形) pattern, wandering north and south. If you live in a place where it brings air up from the south, you get warm weather. In fact, record highs were reported this week in Washington state and Alaska.
But in the eastern United States, like some other unlucky parts of the globe, Arctic air is coming from the north. And that’s how you get a temperature of 3 degrees in Beijing, a reading of minus-42 in mainland Norway, and 18 inches of snow in parts of Britain. The zigzag pattern arises naturally from time to time, but it is not clear why it’s so strong right now.
【小题1】What is the best title of the text?

C
SAN FRANCISCO--- As skies are filled with millions of migrating birds, Europeans scientists say the seasonal miracle appears to depend on a seeming contradiction: The fatter the bird, the more  efficiently it flies.
The result of their study contradict a central theory of aerodynamics(空气动力学), which predicts that the power needed to fly increases with weight.
For birds, apparently, the cost of flying with heavy fuel loads is considerably smaller than previously thought.
Researchers found that red knot wading birds double their normal body weight of 100 grams before making their twice-a-year, non-stop commute(路程) between the British Isles and the Russian Arctic. Distance: 5,000 kilometers.
Another study in the journal Nature measured the benefits of flying in an aerodynamic V formation, which allows bird to save energy by gliding in the lead bird’s air stream.
Flying in formation, their heart rates were as much as 14.5 percent lower than flying solo, according to Henri Weimerskirch, a French scientist. The findings help explain how birds complete difficult migrations.
Researchers had assumed that thinner, more athletic birds would have the best chance of survival.
The first study suggests that building up fat deposits(存放) to be burned as fuel during the migrating is worth more than the energy it takes to carry the additional weight. In the study, researchers said their team studied the birds flown at different body masses during 28 simulated(模拟) flights. They were injected with a small amount of water containing a radioactive element that enabled the team to measure the amount of energy burned.
63. Researchers used to believe_______.
A. the thinner a bird is, the less energy it needs to fly
B. migratory birds make a journey from the British Isles to the Russian Arctic
C. aerodynamics makes no sense
D. birds eat more before they begin their migrations
64. According to the passage, birds prefer to fly in the V formation rather than fly solo because_____.
A. it is against aerodynamic to fly in the V formation
B. they can save energy while migrating 
C. they won’t get lost with a bird leading the way
D. in this way their heart beat faster so that they can fly faster
65. The researchers didn’t ______ in the study.
A. inject the birds with water containing a radioactive element
B. watch birds of different body masses in simulated flights
C. take the birds’ heart rates   
D. feed the birds to fatten them
66. The best title of the passage should be _______.
A. Birds Fatten up for Journey        B. Migratory Birds in Europe
C. New Findings                 D. Migrating in V formation

B
Particles from car exhausts generate more persistent clouds but less rain, new research suggests. Furthermore, putting more of these particles into the atmosphere reduces the low-level winds, which could reduce the amount of wind power available in very polluted regions. The dry but populated regions may therefore suffer a triple blow as a result of vehicle pollution：less water, less hydropower and less wind energy.
Scientists studied the effects of aerosol（浮质）pollution from cars and industry. They correlated satellite data on wind speeds and the amount of aerosol particles in the atmosphere above the South Coast Basin in California and above China. Results showed that higher concentrations of aerosols were closely associated with slower ground winds. Scientists then used computer models to support the idea that there was a cause and effect relationship behind this correlation.
Particles floating in the atmosphere block energy from the Sun, preventing it from warming the surface of the Earth. Cooler surface temperatures during the day means the low—level and slow moving air does not rise up and mix with the faster winds at higher altitudes. Slower winds also induce less evaporation from oceans, rivers and lakes. And finally, once clouds have formed, they store less moisture in the form of rain. This is because raindrops form around small particles— dust, for instance, or pollution. With more particles in the atmosphere, it takes longer for enough water to condense（凝结）onto a particle to form a raindrop. And if the cloud of fine droplets（小滴）moves to a drier area before its would-be rain can rail, the moisture evaporates once more and the cloud disappears.
Scientists note their new work does not contradict previous findings that suggest global warming might lead to more tropical storms, because there is far less particulate（微粒的）pollution over the oceans.
60. The first paragraph mainly talks about        .
A. the results of vehicle pollution
B. an introduction to particles from car exhausts
C. less wind energy in polluted regions
D. less water caused by vehicle pollution
61. From this passage we can learn that        .
A. scientists supported their idea by using material models
B. the new study is contrary to the previous findings
C. if there are more particles in the atmosphere, there will be more raindrops
D. there is a cause and effect relationship between wind speeds and particle pollution
62. The underlined word “induce” in Paragraph 3 most probably mean       _ .
A. reduce         B. persuade           C. cause             D. produce
63. What’s the best title for the passage?
A. Pollution and Global Warming          B. Car, Wind and Rain
C. Industry Pollution                    D. How Rain Forms