Economic development depends on the extraction of natural resources and on low-skilled labor, which has resulted in a weak manufacturing base and uneven distribution of wealth. Agriculture still accounts for the major share of rural household income and employs over 60 percent of Africa’ s labor force, particularly women. Low agricultural productivity continues to threaten food security in Africa as a whole. Africa needs a green, clean industrialization that leapfrogs outdated, polluting processes and platforms and benefits from new technologies. Inclusive and sustainable industrialization is a key stepping stone towards sustained economic growth, food security and poverty eradication in Africa.

When the United States Congress created Yellowstone National Park in 1872, the goal was to set aside a place where Americans could enjoy the beauty of nature for years to come. Now, 142 years later, there are hundreds of national parks across the country, and technology is changing the way people experience them. Should park visitors be able to use cell phones, or should their use be restricted? “Connectivity presents a real challenge to all of us. “ Al Nash says. He is a public affairs officer at Yellowstone National Park. He says cell phone service at Yellowstone is available in parts of the park with stores and campgrounds. This makes it easy for visitors to share photos of their trip on social networking sites and to stay in touch with friends and family members. If a park visitor is hurt or in danger, cell phones make it easier to get help. Some say the ability to download applications that provide information about plants and animals in the park can enrich a visitor’ s experience. Others say cell phones disturb people’ s enjoyment of our national parks. In their view, cell phone towers are an eyesore, and they would rather hear the sound of birds than the ring of an incoming call. Can you imagine looking out a peaceful lake or field of grass only to be disturbed by a person shouting into their phone, “Can you hear me now?“ Nash says Yellowstone tries to strike a balance. “Ultimately, our job is to let visitors understand and enjoy nature better while protecting what people find special about Yellowstone, and one of those things that’ s special is the ability to get away from the hustle and bustle of one’ s daily life. “

______a good thing they didn’t catch you. That’s There’s It’s What’s

______your homework and make sure that you don’t______any mistakes. Do: do Make: make Make: do Do: make

By the time the war______, most of the people had already left. broke out broke up intervened happen

The company is small but promising. ______, I’ll take the job. In some cases In that case In case In any case

It was a cold winter day. A woman drove up to the Rainbow Bridge tollbooth (收费站). “I’m paying for myself, and for the six cars behind me, “ she said with a smile, handing over seven tickets. One after another, the next six drivers arriving at the tollbooth were informed, “Some lady up a-head already paid your fare. “ It turned out that the woman, Natalie Smith, had read something on a friend’ s refrigerator: “Practice random kindness and senseless acts of beauty. “ The phrase impressed her so much that she copied it down. Judy Foreman spotted the same phrase on a warehouse wall far away from home. When it stayed on her mind for days, she gave up and drove all the way back to copy it down. “ I thought it was beautiful, “ she said, explaining why she’ d taken to writing it at the bottom of all her letters, “ like a message from above. “ Her husband, Frank, liked the phrase so much that he put it up on the classroom wall for his students, one of whom was the daughter of Alice Johnson, a local news reporter. Alice put it in the newspaper, admitting that though she liked it, she didn’ t know where it came from or what it really meant. Two days later, Alice got a call from Anne Herbert, a woman living in Marin. It was in a restaurant that Anne wrote the phrase down on a piece of paper, after turning it around in her mind for days. “ Here’ s the idea, “ Anne says. “Anything you think there should be more of, do it randomly. “ Her fantasies include painting the classrooms of shabby schools, leaving hot meals on kitchen tables in the poor part of town, and giving money secretly to a proud old lady. Anne says, “ Kindness can build on itself as much as violence can. “ The acts of random kindness spread. If you were one of those drivers who found your fare paid, who knows what you might have been inspired to do for someone else later. Like all great events, kindness begins slowly, with every single act. Let it be yours!

Is that 6a.m. workout getting in the way of good sleep? Don’ t think your fat cells won’ t notice. A new study published in The Annals of Internal Medicine (a medical journal) finds that inadequate shut-eye has a harmful effect on fat cells, reducing their ability to respond to insulin (胰岛素) by a-bout 30 percent. Over the long-term, this decreased response could set the stage for type-2 diabetes (a medical condition in which someone has too much sugar in his or her blood) , fatty liver disease and weight gain. The study adds to a growing body of evidence that there’ s “an intimate relationship between the amount of sleep we get and our ability to maintain a good, healthy body weight, “ says sleep expert Helene Emsellem, director of the Center for Sleep and Wake Disorders in Chevy Chase, Maryland. But Americans don’t seem to be getting the message that we need seven to nine hours per night. More than 1 in 5 of us, according to a report from the Centers for Disease Control and Prevention, is getting six or fewer hours of sleep per night, on average. So how did researchers study fat cells in the Annals paper? Matthew Brady of the University of Chicago and a group of colleagues selected and persuaded seven volunteers to take part in the research project. They were all young, thin and healthy and agreed to sleep for eight nights in a sleep lab. “For four nights they were allowed to stay in bed for 8. 5 hours a night, “ says Brady. Then, a month later, they came back for four additional nights—but this time they were allowed just 4. 5 hours of sleep per night. And after each visit, researchers got a sample of their fat. Brady explains that the fat cells responded significantly to the loss of sleep. “I was very surprised to be honest, “ he says. Bad things can happen when fat cells become less responsive to insulin. “Fat cells are actually your friend, “ he says. “They’ re there to store lipids (血脂). “ when lipids stay inside the cells, your body can utilize the fat when you’ re exercising or sleeping or going about your day. “ However, when fat cells start to become insulin resistant, the lipids start to leach out of the fat cells and rise in the bloodstream, “ Brady says.

The meeting will begin at 9: 00 according to the______. calendar column schedule diagram

The notice was written in several languages______foreign tourists should misunderstand it. so that if lest otherwise

I’d rather you______anything about this matter this evening. say didn’ t say don’t say not say

He didn’t fear new ideas, ______the future. nor feared he nor he did fear nor did he fear nor did fear he

______is well known to all, China will be an advanced and powerful country in the near future. As That This It

From then on, a sound system of Party Committee meetings was ______ in all leading bodies. constructed instituted confirmed given up

This kind of work is______me. unfamiliar with unfamiliar by unfamiliar to not unfamiliar of

—“What’ s in your hand?“ —“ It is a______bill. “ two-thousand dollar two thousand dollars two-thousand-dollar two-thousand-dollars

The earthquake happened in______. late 1960s the late of 1960s late of 1960s late of the 1960s

We all feel sorry for______for so long after your arrival. keep you waiting having kept you waiting waiting for you keep you wait

I can’ t speak Japanese, but I do wish I______. can could had spoke

Economic development depends on the extraction of natural resources and on low-skilled labor, which has resulted in a weak manufacturing base and uneven distribution of wealth. Agriculture still accounts for the major share of rural household income and employs over 60 percent of Africa’ s labor force, particularly women. Low agricultural productivity continues to threaten food security in Africa as a whole. Africa needs a green, clean industrialization that leapfrogs outdated, polluting processes and platforms and benefits from new technologies. Inclusive and sustainable industrialization is a key stepping stone towards sustained economic growth, food security and poverty eradication in Africa.

Speaker A: So, what’ s the status of our advertising campaign? Speaker B: As I mentioned before, it’ll be a national campaign starting next month.【D1】______First, we’ll have 30-second spots on television once a day for 3 weeks. At the same time, we’ll do 15-second radio commercials 3 times a day in selected cities with large population. Finally, we’ll have some outdoor ads using billboards near main entrances to big cities. Speaker A:【D2】______ Speaker B: We’ re focusing on slice of life, showing how you can beat the summer heat by biting into a cool ice-cream sandwich. We will tell everyone reasons for why were commend the products through hyping our choices of flavors and show everyone they’ re not stuck with just vanilla. Speaker A:【D3】______Will we have a new slogan? Speaker B: Definitely. The advertising agency’ s working on that right now.【D4】______ Speaker A: Sounds like we’ll have a winner on our hands! A. Sounds like an ideal approach. B. What style will the ads use? C. They’ll have some proposals ready by the end of the week. D. We’ ve decided to use a variety of media for full coverage.