下面文章中有5个段落需要添加首句(第1～5题)。请从以下选项(A, B, C, D, E和F)中选出适合各段落的首句，并在答题纸上将相应选项的标号涂黑。选项中有一项是多余选项。
| A． |
Come in with something to say. |
| B． |
Prepare general comments. |
| C． |
Bring materials with you. |
| D． |
Don't make them wait. |
| E． |
Have no fear. |
| F． |
Go it alone. |
One of the best things you can do any time in the semester is go see the professor. So hoof on over to an office hour and have some one-on-one face time with someone who'll help you master the material and improve your grade, to boot. But how should you have this conversation with the professor? Here are five insider tips about how to make that office hour really count:
1 No need to get all bent out of shape about going to see the professor. The professor would actually like to see you and answer your questions. Believe it or not, he or she is on your side and is eager to see you do well. And besides, he or she has seen many students stupider than you, so nothing you're gong to ask will set the record for stupidity.
2 Even though you might feel more comfortable going with a friend or partner, the office hour will go better if it's just you and the professor. You'll get in more questions, the discussion will be tailored to what you need most help on, and two-party communication is almost always more productive than committee work. You friend can wait outside for the discussion.
3 If you can't make the official office hours, most professors are willing to make individual, appointments to help you out. If you're lucky enough to land such an accommodation, though, be sure you're 100 percent on time. There's nothing that ticks off a professor more than making him-or herself available for a custom office hour only to find that you don't care enough to come on time. And besides, the professor might leave after ten minutes, which would make your trip a total loss.
4 If you're meeting with the professor to go over a paper or test, or to ask questions about a particular lecture or reading, make sure you bring that paper or test, or your lecture notes or a copy of the article. The professor doesn't remember the comments he or she wrote on your individual piece of work-though he or she will be able to recall them after just a brief glance at your work. And if you have your lecture notes or the article in hand, you and the professor will be able to examine specific points that are confusing to you, rather than just talking in a general way about the contents.
5 Office hours almost always go better if you bring a few specific questions to the meeting. It's almost never good to start a meeting with general comments such as: "I didn't understand what you said about [main topic of the course]"or "I couldn't understand any of your lectures last week." Much better is to come in with two or three conversation-starters, about a specific concept, point, or problem you didn't understand. Keep in mind that in a fifteen-minute office hour (which is how long these things usually last), two or three questions are usually the most you'll have time to discuss.
In much of Asia,especially the so-called＂rice bowl＂ cultures of China,Japan,Korea, 41Vietnam,food is usually eaten with chopsticks.
Chopsticks are usually two long,thin pieces of wood or bamboo.They can also be made of plastic,animal bone or metal.Sometimes chopsticks are quite artistic.Truly elegant chopsticks might 42 (make)of gold and silver with Chinese characters.Skilled workers also combine various hardwoods and metal 43 (create)special designs.
The Chinese have used chopsticks for five thousand years.People probably cooked their f ood in large pots, 44 (use)twigs( 树枝 )to remove it.Over time, 45 thepopulation grew,people began cutting food into small pieces so it would cook more quickly.
Food in small pieces could be eaten easily with twigs which 46(gradual)turned into chopsticks.
Some people think that the great Chinese scholar Confucius, 47 lived from roughly 551 to 479 B.C.,influenced the 48 (develop)of chopsticks.Confucius believed knives would remind people of killings and 49 (be)too violent for use at the table.
Chopsticks are not used everywhere in Asia.In India,for example,most people traditionally eat 50their hands.
Last October ,while tending her garden in Mora ,Sweden ,Lena Pahlsson pulled out a handful of small 56 (carrot) and was about to throw them away .But something made her look closer ,and she noticed a 57 (shine) object .Yes ,there beneath the leafy top of one tiny carrot was her long-lost wedding ring.
Pahlsson screamed 58 loudly that her daughter came running from the house ."she thought I had hurt 59 (I),"says Pahlsson Sixteen years 60 (early),Pahlsson had removed the diamond ring 61 (cook) a meal. When she
wanted to put the ring back on later, it was gone. She
supected that one of her three daughters-then ten. eight, and six- had picked it up, but the girls said they hadn't. Pahlsson and her husband 62 (seareh) the kitchen, checking every corner. but turned up nothing. "I gave up hope of finding my ring again," she says. She never replaced it.
Pahlsson and her husband now think the ring probably got 63 (sweep) into a pile of kitchen rubbish and was spread over the garden, 64 it remained until the carrot's leafy top accidentally sprouted (生长) through it. For Pahlsson, its return was 65 wonder.
Population Change
Why is the world's population growing? The answer is not what you might think. The reason for the explosion is not that people have been reproducing like rabbits, but that people have stopped dropping dead like flies. In 1900, people died at the average age of 30.By 2000 the average age was 65.But while increasing health was a typical feature of the 20 thcentury, declining birth rate could be a defining one of the 21 st.
Statistics show that the average number of births per woman has fallen from 4.9 in the early 1960s to 2.5 nowadays. Furthermore, around 50% of the world's population live in regions where the figure is now below the replacement level(i.e.2.1 births per woman)and almost all developed nations are experiencing sub-replacement birth rate. You might think that developing nations would make up the loss(especially since80% of the world's people now live in such nations), but you'd be wrong. Declining birth rate is a major problem in many developing regions too, which might cause catastrophic global shortages of work force within a few decades.
A great decline in young work force is likely to occur in China, for instance. What does it imply? First, China needs to undergo rapid economic development before a population decline hits the country. Second, if other factors such as technology remain constant, economic growth and material expectations will fall well below recent standards and this could invite trouble.
Russia is another country with population problems that could break its economic promise. Since 1992 the number of people dying has been bigger than that of those being born by a massive 50%,Indeed official figures suggest the country has shrunk by 5% since 1993 and people in Russia live a shorter life now than those in 1961.Why is this occurring? Nobody is quite sure, but poor diet an above all long-time alcoholism have much to do with it. If current trends don't bend. Russia's population will be about the size of Yemen's by the year 2050.
In the north of India, the population is booming due to high birth rates, but in the south, where most economic development is taking place, birth rate is falling rapidly. In a further twist, birth rate is highest in poorly educated rural areas and lowest in highly educated urban areas. In total, 25% of India's working-age population has no education. In 2030, a sixth of the country's potential work force could be totally uneducated.
One solution is obviously to import foreign workers via immigration. As for the USA, it is almost unique among developed nations in having a population that is expected to grow by 20% from 2010-2030. Moreover, the USA has a track record of successfully accepting immigrants. As a result it's likely to see a rise in the size of its working-age population and to witness strong economic growth over the longer term.
If you feel stressed by responsibilities at work, you should take a step back and identify (识别)those of 41 (great)and less importance. Then, handle the most important tasks first so you'll feel a real sense of 42(achieve). Leaving the less important things until tomorrow 43(be) often acceptable.
Most of us are more focused 44 our tasks in the morning than we are later in the day. So, get an early start and try to be as productive 45possible before lunch. This will give you the confidence you need to get you through the afternoon and go home feeling accomplished.
Recent 46 (study) show that we are far more productive at work if we take short breaks 47 (regular). Give your body and brain a rest by stepping outside for 48 while, exercising, or dong something you enjoy.
If you find something you love doing outside of the office, you'll be less likely 49 (bring) your work home. It could be anything-gardening, cooking, music, sports-but whatever it is, 50(make) sure it's a relief from daily stress rather than another thing to worry about.
Chengdu has dozens of new millionaires, Asia's biggest building, and fancy new hotels. But for tourists like me, pandas are its top____61_(attract).
So it was a great honour to be invited backstage at the not-for-profit Panda Base, where ticket money helps pay for research, I_____62_（allow）to get up close to these cute animals at the 600-acre centre. From tomorrow, I will be their UK ambassador. The title will be __63___(official) given to me at a ceremony in London. But my connection with pandas goes back ____64__ my days on a TV show in the mid-1980s, ____65_ I was the first Western TV reporter__66___ (permit) to film a special unit caring for pandas rescued from starvation in the wild. My ambassadorial duties will include ____67_(introduce) British visitors to the 120-plus pandas at Chengdu and others at a research in the misty mountains of Bifengxia.
On my recent visit, I help a lively three-month-old twin that had been rejected by _____68_ (it) mother. The nursery team switches him every few __69__( day) with his sister so that while one is being bottle-fed, __70____ other is with mum-she never suspects.