Many do-it-yourself homeowners are interested in 
trying out solar power to leam about the technology and
perhaps to provide energy for limited-use applications．
There are a variety of ways to find cheap solar panels
（板）, including buying used and building your own
with factory seconds．Both methods will save money
while forcing you to learn the ins-and-outs of a solar
power array （阵列）．
We've all seen solar-powered street signs or PV
panels being used for various purposes at remote locations．
When those units become cracked or chipped and are considered "unsafe", companies are forced to replace them, generally to avoid responsibility issues．Because it's difficult to get rid of PV panels, many companies, if approached, are willing to give them away or to sell them for modest prices．Depending on the degree of damage present, expect to see performance degradation （降级） in the range of 10% to 60%．A multimeter （万用表） can be used to test the panel before buying．If the panel's free, take it anyway．It could still be useful in a home solar project．
A solar panel is really nothing but a box serving as a container for a large group of solar cells．Factory second solar cells are usually sold on eBay at a small part of their regular cost．The cells come in a variety of sizes．You will need to figure out how much power a single cell produces to determine how many will need to be wired together to form an array．
A simple search of the Internet will show numerous sites detailing home solar panel projects．Do-it-yourself lovers are generally quite generous in supply photographs of their work and description of what went wrong and right with the project．
Getting cheap solar panels with slight imperfections, either used or through sales of factory seconds, is a perfect solution for home-built renewable energy projects．The high number of solar lovers online provide a wealth of useful information．Only limited skills are required, plus an understanding of the basic wiring involved．All are well within the talents of almost any home handyman．Beyond the satisfaction of having completed the project, you'll come away with a functional solar panel that will be a source of power for use around the house or at remote locations．
Solar energy systems are quickly becoming more popular with homeowners as prices continue to decline．
72．The author writes the passage to introduce ____．
A．ways of finding cheap solar panels B．ways of saving energy
C．a way of making a solar panel D．a home-built energy system
73．What does the phrase "factory seconds" in the passage refer to?
A．Second-hand factory products． B．Cheap but perfect factory products
C．Faulty factory solar cells． D．The second best factory solar cells
74．From Paragraph 5, we can learn about home-built energy projects that ____．
A．none of them are beyond home handymen
B．a lot of useful information is available on the Internet
C．a perfect solution is to get cheap and perfect solar panels
D．understanding electrical wiring is not necessarily needed
75．What is the author's attitude towards the future of solar energy systems?
A．Optimistic． B．Pessimistic. C．Indifferent． D．Doubtful
Most people know that Marie Curie was the first woman to win the Nobel Prize, and the first person to win it twice. However, few people know that she was also the mother of a Nobel Prize winner.
Born in September, 1897, Irene Curie was the first of the Curies’ two daughters. Along with nine other children whose parents were also famous scholars, Irene studied in their own school, and her mother was one of the teachers. She finished her high school education at the College of Sévigné in Paris.
Irene entered the University of Paris in 1914 to prepare for a degree in mathematics and physics. When World War I began, Irene went to help her mother, who was using X-ray facilities (设备) to help save the lives of wounded soldiers. Irene continued the work by developing X-ray facilities in military hospitals in France and Belgium. Her services were recognised in the form of a Military Medal by the French government.
In 1918, Irene became her mother’s assistant at the Curie Institute. In December 1924, Frederic Joliot joined the Institute, and Irene taught him the techniques required for his work. They soon fell in love and were married in 1926. Their daughter Helene was born in 1927 and their son Pierre five years later.
Like her mother, Irene combined family and career. Like her mother, Irene was awarded a Nobel Prize, along with her husband, in 1935. Unfortunately, also like her mother, she developed leukemia (白血病) because of her work with radioactivity（辐射能）. Irene Joliot-Curie died from leukemia on March 17, 1956.Why was Irene Curie awarded a Military Medal?
| A．Because she received a degree in mathematics. |
| B．Because she contributed to saving the wounded. |
| C．Because she won the Nobel Prize with Frederic. |
| D．Because she worked as a helper to her mother. |
Where did Irene Curie meet her husband Frederic Joliot?
| A．At the Curie Institute. | B．At the University of Paris. |
| C．At a military hospital. | D．At the College of Sévigné. |
When was the second child of Irene Curie and Frederic Joliot born?
| A．In 1932. | B．In 1927. |
| C．In 1897. | D．In 1926. |
In which of the following aspects was Irene Curie different from her mother?
| A．Irene worked with radioactivity. |
| B．Irene combined family and career. |
| C．Irene won the Nobel Prize once. |
| D．Irene died from leukemia. |
Sicily, an island of Italy, is home to beautiful beaches, outstanding food, and a bit of Italian history on every corner. It’s located just southwest of the Italian mainland and it’s the largest Mediterranean island. Controlled by many armies over the centuries, it became the site of Roman and Greek colonies(殖民地). Those cultures remain to this day.
As part of the Year of Italy in China, an exhibition of Sicilian culture is being held at the National Museum of China from April 29 to June 27. Although they have a rich culture and history, Sicilian people lead a simple life. Living on land with fertile (肥沃的) soil, most of them work in agriculture, fishing and of course tourism.
In Sicily, most stores and businesses are closed from one to four in the afternoon. Streets become crowded around five as people start to go out and engage in a variety of activities. They may take a walk to the shops, enjoy a pastry (糕点)or just meet up with friends.
Food is one of the great pleasures of Sicilian people. There is an old Sicilian saying: “With a contented stomach, your heart is forgiving. With an empty stomach you forgive nothing.”
People will go miles out their way to eat fresh seafood, such as tuna(金枪鱼), swordfish(箭鱼) and sardines(沙丁鱼).
Pasta (意大利面)is the main food. Each region has its seasonal pasta dishes, and every family cook their own specialty. Bread is common too. As another Sicilian saying goes, “A table without bread is like a day without sunshine.” In Sicily, bread is always freshly baked or bought, and usually twice a day.What can be learned from the passage?
| A．Sicily is the only island in Italy. |
| B．It is easy to do shopping in the afternoon. |
| C．Sicily was controlled by several countries. |
| D．Sicilian people seldom take part in activities. |
The local people work in several fields EXCEPT .
| A．fishing | B．mining | C．tourism | D．agriculture |
The underlined sentence in the last paragraph is used to show .
| A．bread is a must for Sicilians |
| B．food is a great pleasure for them |
| C．bread should be cooked every day |
| D．Sicilians have nothing to eat but bread |
The best title of this passage might be______.
| A．Italian people |
| B．Italian culture |
| C．A Sicilian exhibition |
| D．Sicily—an Island of Italy |
If you are sending a text message, watching TV or listening to the radio, you may stop and give this your full attention. Multi-tasking shrinks(使……萎缩) the brain, research suggests.
A study found that men and women who frequently used several types of technology at the same time had less grey matter in a key part of the brain. University of Sussex researchers said, “Using mobile phones, laptops and other media devices simultaneously could be changing the structure of our brains.”
Worryingly, the part of the brain that shrinks is involved in processing emotion. The finding follows research which has linked multi-tasking with a shortened attention span, depression, anxiety and lower grades at school.
The researchers began by asking 75 healthy men and women how often they divided their attention between different types of technology. This could mean sending a text message while listening to music and checking email, or speaking on the phone while watching TV and surfing the internet. The volunteers were then given brain scans which showed they had less grey matter in a region called the anterior cingulated cortex (ACC) (前扣带皮质). Scientists have proved that brain structure can be changed on exposure to fresh environments and experience.
Other studies have shown that training – such as learning to play magic tricks or taxi drivers’ learning the map of London – can increase grey-matter densities(密度) in certain parts.
Experts have also warned of the harmful impact technology can have on our memory and attention span. The University of California team conducted a survey of more than 18,000 people aged between 18 and 99, and found 20% had problems with memory. Researchers were shocked greatly by the 14% of 18 to 39-year-old people who also worried about their memories.
Multi-tasking may shorten attention span, making it harder to focus and form memories, the researchers said, adding that youngsters may be particularly affected by stress.
The underlined word "simultaneously" in Para.2 means _________.
| A．on one’s own | B．at no time |
| C．at the same time | D．by accident |
All of the following are possible effects of multi-tasking except _________.
| A．saving time |
| B．a shortened attention span |
| C．lower grades at school |
| D．depression and anxiety |
What can increase grey-matter densities?
| A．Sending a text message while listening to music . |
| B．Students’ doing their homework. |
| C．Taxi drivers’ learning the map of London. |
| D．Speaking on the phone while watching TV. |
Which of the following can be the best title of this passage?
| A．Media multi-tasking is becoming more popular. |
| B．Multi-tasking shrinks the brain. |
| C．Multi-tasking may shorten attention span. |
| D．People are worried about their memories. |
“I will never marry, ” the future Elizabeth I declared at the age of eight, and, to the terror of her people, the Great Queen kept her word.
For four centuries, historians have guessed why Elizabeth never married. In her own day, her decision to remain single was considered absurd and dangerous. A queen needed a husband to make political decisions for her and to organize and lead her military campaigns. More important, she needed male heirs (继承人) to avoid a civil war after her death.
There was no shortage of suitors for the Queen, both English courtiers (朝臣) and foreign princes, and it was confidently expected for the best part of 30 years that Elizabeth would eventually marry one of them. Indeed, although she insisted that she preferred the single state, she kept these suitors in a state of permanent expectation. This was a deliberate policy on the Queen's part, since by keeping foreign princes in hope, sometimes for a decade, she kept them friendly when they might otherwise have made war on her kingdom.
There were, indeed, good political reasons for her avoiding marriage. The disastrous union of her sister Mary I to Philip II of Spain had had an unwelcome foreign influence upon English politics. The English were generally prejudiced against the Queen taking a foreign husband, particularly a Catholic one. Yet if she married an English, jealousy might lead to the separation of the court.
There were other deeper reasons for Elizabeth's unwillingness to marry, chief of which, I believe, was her fear of losing her autonomy as Queen. In the 16th century, a queen was regarded as holding supreme dominion(统治权)over the state, while a husband was thought to hold supreme dominion over his wife. Elizabeth knew that marriage and motherhood would bring some harm to her power.
She once pointed out that marriage seemed too uncertain a state for her. She had seen several unions in her immediate family break down, including that of her own parents. Elizabeth's father, Henry VIII, had had her mother, Anne Boleyn, killed; her stepmother Catherine Howard later suffered the same fate. When Elizabeth was 14 she was all but attracted by Admiral Thomas Seymour, who also went to the prison within a year. Witnessing these terrible events at an early age, it has been argued, may have put Elizabeth off marriage.
Elizabeth had to decide her priorities. Marriage or being single? Elizabeth was far too intelligent. The choice she made was courageous and revolutionary, and, in the long run, the right one for England.
To the suitors including English courtiers and foreign princes, Elizabeth ________.
| A．held back the truth |
| B．gave a definite answer “no” |
| C．kept them expecting on purpose |
| D．said she preferred the single state |
If Elizabeth had married a foreign prince, there might have been ________.
| A．prejudice against her |
| B．separation of the court |
| C．jealousy among English courtiers |
| D．a negative impact on English politics |
Which of the following implications is right according to the passage?
| A．Queen Elizabeth was not a Catholic. |
| B．Some foreign princes made war on Britain. |
| C．Catherine Howard was killed by Anne Boleyn. |
| D．Admiral Thomas Seymour was killed by Henry VIII. |
What is the attitude of the author towards Queen Elizabeth never marrying in her life?
| A．Pitiful. | B．Approving. | C．Negative. | D．Neutral. |
You put a great deal of effort into reaching the college of your choice. It’s time to get started. But what’s next? Beginning college can be an exciting but awkward time. Follow these tips to adjust to your new life rapidly and make the most of your college experience.
● To save time and money, use the college’s bus system. Taking the bus to school is quick, easy and free in most college towns. You won’t have to locate or afford a place to park either. It’s also a good way to be environmentally aware.
● Save pennies on books by waiting until class starts. You might not even need all of the recommended books. New textbooks cost an arm and a leg. Try buying used textbooks — it’s a surefire way to save money and serves the purpose as well.
● Do never look at college life as an endless series of parties and social activities. But there is a whole lot more to college if you’re serious about graduating. Having a good college experience is all about balancing work and fun.
● Be aware that your living environment can largely affect your academic success. If the dorm doesn’t suit you, consider living at home with your family or renting your own apartment. The best location for your studies isn’t always your dorm. Find a quiet area, like the library, to do your work. Alternatively, buy some headphones that block out noise.
● Be mindful of your diet. Make healthy food choices and watch what you eat. Avoid foods that are processed or high in sugar. The “freshman 15” is real. Many college students gain at least 15 pounds during their freshmen year.
● While electives (选修课) can be helpful when figuring out your major, you shouldn’t entirely rely on them. Clubs and other organizations exist around. Get involved. Make sure, though, that you still have time to study. Having too much on your plate can hurt your grades. Which of the following ideas can be financially wise?
| A．Driving your own car. | B．Buying used books. |
| C．Renting an apartment. | D．Attending activities. |
In the text, freshmen are repeatedly warned against ______.
| A．academic failures | B．physical problems |
| C．traffic accidents | D．social activities |
The “freshman 15” tells the fact that some freshmen ______.
| A．attend limited activities on campus |
| B．have little regular physical exercise |
| C．focus less on their academic work |
| D．take relaxed attitudes to their diets |
The underlined phrase “having too much on your plate” in the last paragraph probably refers to ______.
| A．using too much money for meals |
| B．eating too many unhealthy foods |
| C．taking part in too many after-class activities |
| D．taking an elective that has too many students |
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