题目
题型：不详难度：来源：
When the earth developed — which scientists believe may have happened about 4 billion years ago — many gases covered the earth. The gases caused the earth to be hot. But something wonderful happened. The temperature was just right for thick clouds to form. It rained very hard for a very long time. This gave the earth its oceans. Water made it possible for plants to grow. The plants created oxygen in the atmosphere. Oxygen is the gas that humans and animals breathe.
Only one other planet in the solar system seems to be something like the earth. That planet is Mars (火星). Mars is smaller than the earth, and it is quite a bit cooler. But it is not too cold for humans. On some days, the temperatures are as low as a winter day in the northern United States. If you wore a special space suit, you could walk around on Mars. You would have to bring your own air to breathe, the air on Mars is too thin to breathe.
Mars has the largest volcano (火山) in the solar system. It is sixteen miles high. The highest volcano on the earth is five miles high. The most unexpected (未预测到的) sight on Mars is dried up river beds. Scientists believe that Mars was once much better than it is now. Does this mean there could have been living things on Mars? Scientists are not sure, but there has been no sign so far.
小题1:Which of the following is NOT the reason that the earth has life?
| A．The earth is just the right temperature. |
| B．The volcanos on earth are lower than those on Mars. |
| C．There is oxygen in the atmosphere of the earth. |
| D．The earth seems to be just the right distance away from the sun. |
| A．the Sun | B．the Moon |
| C．the Earth | D．the Mars |
| A．There could have been living things on Mars. |
| B．Mars has the largest volcano in the solar system. |
| C．There is almost no oxygen in the air on Mars. |
| D．Mars is smaller than the earth, and it is quite a bit cooler. |
答案
小题1:B
小题2:C
小题3:A
解析
试题分析：文章大意：地球适合人类生存在于它合适的温度，科学家研究发现火星也比较适合人类生存。
小题1:B细节理解题。文中提到地球是可证实的唯一有生命存在的太阳系行星，其原因包括地球合适的温度、距太阳距离适中和大气里含有氧气等。B项火山与此无关。故B正确。
小题2:C词义推测题。根据第一段中内容及As the third planet from the sun, the earth seems to be just the right distance away.可知距离太阳第三远的行星指的是地球。故C正确。
小题3:A细节理解题。文章最后一段提到火星上有干涸的河床的迹象，但这一点并不能证实火星上存在生命，因为还没有生命迹象，故A项不正确。其他三项都与文章相符。故A正确。
核心考点
试题【The earth is the only planet that scientists think has life. Why does the earth 】；主要考察你对题材分类等知识点的理解。[详细]
举一反三
They say they want to dress as they please. But they all wear the same clothes. They set off in new directions in music. But somehow reason for thinking or acting in thus-and-such a way is that the crowd is doing it. They have come out of their cocoon(蚕茧) -----into a larger cocoon.
It has become harder and harder for a teenager to stand up against the popularity wave and to go his or her own way. Industry has firmly opened up a teenage market. These days every teenager can learn from newspapers and TV what a teenager should have and be. And many of today’s parents have come to award（奖励） high narks for the popularity of their children. All this adds up to great difficulty for the teenager who wants to find his or her own path.
But the difficulty is worth getting over. The path is worth following. You may want to listen to classical music instead of going to a party. You may want to collect rocks when everyone else is collecting records. You may have some thoughts that you don’t care to share at once with your classmates. Well, go to it. Find yourself. Be yourself. Popularity will come-----with the people who respect you for who you are. That’s the only kind of popularity that really counts.
小题1:The writer’s purpose in writing this passage is to tell_______.
| A．readers how to be popular in the world |
| B．parents how to control and guide their children |
| C．teenagers how to learn to decide things for themselves |
| D．people how to understand and respect each other |
| A．are not sure of themselves |
| B．have much difficulty in understanding each other |
| C．dare not do things |
| D．are very much afraid of getting lost |
| A．become different from others in as many ways as possible |
| B．find one’s real self |
| C．get into the right reason and become popular |
| D．rebel against parents |
¨We generally found that media use is not a source of conflict in the home" for families with young children, Ellen Wartella, a researcher from Northwestem University, told USA Today． She led a survey of 2,326 parents who have children 8 and younger．It found that in 80 percent of families, children"s media use was not a problem, with 55 percent “not too" or“ not at all" concerned about it． It also showed parents have more positive than negative feelings about how media consumption affects a child"s learning and the development of creativity．The exception is video games, which are viewed more negatively than TV, computers or mobile devices．“Parents rated video games as more likely to have a negative effect on children"s school performance, attention time, creativity, social skills, behavior and sleep than any other medium," the researchers said in a news conference about the survey．
¨The findings exposes a generational shift （转移） in parental attitudes about technology"s role in young children"s lives," said Wartella．“Today"s parents grew up with technology as a central pact of their lives, so they think about it differently than earlier generations of parents, instead of a battle with kids on one side and parents on the other, the use of media and technology has become a family affair． "
The researchers identified three media environments created by parents: media-centric （39 percent of families） , media-moderate （45%）and media-light （16%）． Children in media-centric families spend at least three hours more each day watching TV or using computers, video games and tablet PCs don"t make parenting easier．And 88 percent of parents say they are most likely to turn to toys or activities to keep their children occupied．Slightly fewer turn to books （79%） and TV（78%）．
The survey didn"t look at how media affects children． That"s a topic that the American Academy of Pediatrics has handled a number of times． The AAP says studies have found too much media use can lead to attention- problems, school difficulties, sleep and eating disorders and being fat． In addition, the Internet and cell phones can provide platforms for illegal and risky behaviors．¨By limiting screen time and offering educational media and non-electronic formats （格式）such as books, newspapers and board games, and watching television with their children, parents can help guide their children"s media experience． Putting questionable content into context and teaching kids a700ut advertising contributes to their media literacy （素养） ," it says．
The pediatricians" group says parents should have “screen-free zones" and TV should be turned off during dinner． At most, it recommends children and teens engage with entertainment media for no more than two hours a day and that should be high-quality content． It is important for kids to spend time on outdoor play, reading, hobbies and using their imaginations in free play．“ Kids under 2 should not use television and other entertainment media because their brains are developing quickly and they learn best from direct human interaction," the group says．
An article on screen time by t．he Mayo Clinic also notes problems linked t．o over screen time, including being fat, irregular sleep , behavioral problems , weak school performance , violence and less time for active and creative play．
小题1:Parents have more negative than positive feelings about media consumption like ．
| A．computers | B．smart phones |
| C．video games | D．tablets PCs |
| A．they can limit the screen time |
| B．they want their children happy |
| C．they also grew up with technology |
| D．they can teach their children themselves |
| A．children in media-centric families are smarter than others |
| B．children in media-light families spend one hour watching TV |
| C．more than half of the parents think children"s media use was a problem |
| D．media-centric children spend more than three hours each day on media use |
| A．try to persuade their children to read books |
| B．ask their children questions while watching TV |
| C．allow their children watching TV or using computers |
| D．turn to toys or activities to keep their children occupied |
| A．Media use time for babies under 2 should be limited． |
| B．Entertainment media use should be high-quality content． |
| C．Schools should provide more time for active and creative play． |
| D．Home media use should provide platforms for illegal and risky behaviors． |
That pain of earning and losing money is a feeling that public schools increasingly want to teach. Forty states now offer some type of financial instruction at the high-school level, teaching students how to balance checkbooks and buy stock in math and social-studies classes. Though it"s too early to measure the full influence of the Great Recession（大萧条）, the interest in personal-finance classes has risen since 2007 when bank failures started to occur regularly. Now, many states including Missouri, Utah, and Tennessee require teenagers to take financial classes to graduate from high school. School districts such as Chicago are encouraging money-management classes for kids as young as primary school, and about 300 colleges or universities now offer online personal-finance classes for incoming students. "These classes really say, "This is how you live independently," " says Ted Beck, president of National Endowment for Financial Education.
Rather than teach investment methods or financial skills, these courses offer a back-to-the-basics approach to handling money: Don"t spend what you don"t have. Put part of your monthly salary into a savings account, and invest in the stock market for the long-term rather than short-term gains. For Ray, this means dividing her earnings from her part-time job at a fast-food restaurant into separate envelopes for paying bills, spending and saving. "Money is so hard to make but so easy to spend," she says one weekday after school. "That is the big takeaway."
Teaching kids about the value of cash certainly is one of the programs" goals, but teachers also want students to think hard about their finances long term. It"s easy for teenagers to get annoyed about gas prices because many of them drive cars. But the hard part is urging them to put off the instant satisfaction of buying a new T-shirt or an iPod. "Investing and retirement aren"t things teenagers are thinking about. For them, the future is this weekend," says Gayle Whitefield, a business and marketing teacher at Uth’s Riverton High School.
That’s a big goal for these classes: preventing kids from making the same financial missteps their parents did when it comes to saving, spending, and debt. Though the personal savings rate has increased up to 4. 2 percent, that’s still a far distance from 1982, when Americans saved 11. 2 percent of their incomes. “It’s hard for schools to reach strict money-management skills when teenagers go home and watch their parents increase credit-card debt. It’s like telling your kids not to smoke and then lighting up a cigarette in front of them,” Beck says.
Even with these challenges, students such as Ray say learning about money in school is worthwhile. After Ray finished her financial class, she opened up a savings account at her local bank and started to think more about how she and her family would pay for college. “She just has a better understanding of money and how it affects the world,” says her mother, Darleen－and that’s sown to the details of how money is spent from daily expenses to various taxes. All of this talk of money can make Ray worry, she says, but luckily, she feels prepared to face it.
小题1:The “stock market game” mentioned in Paragraph 1 is meant to .
| A．introduce a new course to students |
| B．help students learn about investment |
| C．teach how to apply for a credit card |
| D．encourage students’ personal savings |
| A．By giving examples. | B．By providing data. |
| C．By raising questions. | D．By making comparisons. |
| A．better students’ learning methods |
| B．prevent students going into debt |
| C．help students get accepted by colleges |
| D．make students become very wealthy |
| A．pay off all her debts. | B．handle her money better |
| C．find a job in a bank. | D．manage the family income |
| A．ways to teach students to earn money |
| B．how Diane Ray learns to value money |
| C．the push to teach personal finance in school |
| D．how students choose a proper financial class |
But experts are now warning that the current shoe fashions will be causing teenagers discomfort in the short term and storing up years of foot, knee and back pain in the future. Here, the experts identify the problems caused by teenagers’ shoe choice.
KEDS/VANS
Slipon shoes with elastic (弹性的) sides are particularly popular among teenage boys—with Keds and Vans the most sought-after brands.
The main problem is that they are just too flat—so flat that the heel, which strikes the ground first, also becomes damaged and painful.
BALLET PUMPS
The worst shoes of all are such light and thin dolly shoes. The problem is partly their flatness, as with Keds and Vans. However ballet pumps, which have no string or heel, have other specific problems.
“As the shoe has no fastening device, it relies on the toes to keep the shoe on, causing an awkward gait (步法) , this leads to short—and long-term problems such as calluses (茧子), heel and knee pain.”
WEDGES AND STILETTOS
These shoes can also cause problems with gait. They may look good, but the heels on these are so high they can force the wearer’s body weight forward, making them very unstable.
Teens who wear these shoes regularly are also in danger of joining those millions of women with constant back pain.
SCHOOL SHOES
So what do podiatrists (足科医生)have on their wish list, especially for everyday wear?
Something in a natural, breathable fabric, with a string to hold it on，with a small heel and a deep toebox that does not press the toes，such as Clark"s，Marks & Spencer or Rhino.
If your teen insists on wearing “bad” shoes, get them some simple foot orthotics(矫形器) in the shoes. These support and correct the movement of the foot and, properly fitted by a podiatrist, can often transform their walk and halt the damage.
小题1:Of all the shoes mentioned in the passage, which can cause the worst problems?
| A．Ballet Pumps. | B．Wedges & Stilettos. | C．Keds and Vans | D．Marks & Spencer. |
| A．increase | B．stop | C．worsen | D．cure |
| A．podiatrists are expert at producing branded shoes |
| B．fashionable shoes all have orthotics in them |
| C．experts are strongly against wearing popular shoes |
| D．trendy shoes may ruin teenager’ health |
Experts say the obesity epidemic(流行病) is spreading to children, though more slowly than in adults. The obesity, they say, will do harm to the health of China’ s citizens and economy.“We"re seeing a very large number of teenagers who are quite heavy and aren"t moving much，” said Barry Popkin, a nutrition(营养) professor. Popkin carries out an ongoing healthandnutrition survey of 16,000 households in China. He says more kids today are overeating and putting on weight “quite quickly.” In just ten years China‘s childhood obesity rate has doubled，with the greatest gains coming in urban areas.“In big cities it"s a big problem.”
Some experts blame the extra fat on a range of factors, many of them tied to China’ s rapidly changing economy and culture. The diets of Chinese adults and children are far higher in meats, fish, eggs, dairy products, fats and sugars than ever before. In addition，kids—especially city dwellers—are more sedentary today and spend more time indoors in front of homework, television，computer games, and the Internet.
Shuwen Ng，a health economist, says that kids in China now have pocket money, and they spend a portion of it on junk food. Ng adds that advertising and peer groups influence kids" food choices. Certain foods, such as new candies or fast food, have attractive features.
China’ s childhood obesity rate stillfall behind that of the United States, where some 15 percent of kids are said to be obese. But the longterm effects are equally serious.
小题1:According to the passage we know________.
| A．weightloss camps have been very popular in China six years ago |
| B．about 290 million Chinese are overweight in China in all |
| C．in China childhood obesity rate in rural areas is lower than that in major cities |
| D．America’ s childhood obesity rate is lower than China’s |
| A．Advertising on some new candies. |
| B．ignorance of weight-control. |
| C．Playing computer games for long time. |
| D．Having pocket money. |
| A．confident | B．patient | C．energetic | D．inactive |
| A．obesity explosion in China will affect the United States |
| B．there are great difference in kids" food choices now |
| C．junk food leads to childhood obesity |
| D．city children eat more than rural children |
| A．Chinese Childhood Obesity problem |
| B．Weightloss Camps in China |
| C．Obesity problem"s influence on Chinese Economy |
| D．Obesity problem in China and America |
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