*Question*
Read the following article and select the best answer. Article: We have only one earth.In a world with limited land, water and other natural resources, the harm from the traditional business model is on the rise.Actually, the past decades has seen more and more forests disappearing and globe becoming increasingly warm.People now realize that this unhealthy situation must be changed, and that we must be able to develop in sustainable ways.That means growth with low carbon or development of sustainable products.In other words, we should keep the earth healthy while using its supply of natural resources. Today, sustainable development is a proper trend in many countries.According to a recent study, the global market for low-carbon energy will become three times bigger over the next decades.China, for example, has set its mind on leading that market, hoping to seize chances in the new round of the global energy revolution.It is how trying hard to make full use of wind and solar energy, and is spending a huge amount of money making electric cars and high-speed trains.In addition, we are also seeing great growth in the global markets for sustainable products such as palm oil , which is produced without cutting down valuable rainforest.In recent years the markets for sustainable products have grown by more than 50%. Governments can fully develop the potential of these new markets.First, they can set high targets for reducing carbon emissions and targets for saving and reusing energy.Besides, stronger arrangement of public resources like forests can also help to speed up the development.Finally, governments can avoid the huge expenses that are taking us in the wrong direction, and redirecting some of those expenses can accelerate the change from traditional model to a sustainable one. The major challenge of this century is to find ways to meet the needs of growing population within the limits of this single planet.That is no small task, but it offers new chances for sustainable product industries. Question: What is the main purpose of the passage? - To introduce a new business model. - To compare two business models. - To predict a change of the global market. - To advocate sustainable development.
**Answer**
To advocate sustainable development.

*Question*
Read the following article and select the best answer. Article: If you don't prepare yourself now, retirement may be some of the most boring and dull years of your life. To have a happy, fulfilling retirement, you need to start preparing right away. The most obvious thing for people to do when they retire is to take up a hobby. The most important step to take before retiring, though, is to make sure that you actually have started some hobbies. Once you're retired, unless you 've already started a hobby, you'll find it very hard to get into something new. Some hobbies aren't for everyone. Think about what you enjoy doing and start participating on a casual basis now. Another thing many people participate in is volunteering. Not only does volunteering give you something to do, it also gives you a sense of accomplishment and can add meaning to your life .Volunteering is also rewarding in other ways, too. There are hundreds of different types of volunteer services and you'll always be able to meet new and interesting people. Also, don't think that volunteering is always only about helping someone for free. Many companies pay their volunteers after they've had enough experience and prove themselves to be valuable workers. There are plenty of other potions, as well. Going back to school is a great way to keep yourself feeling young. Taking a vacation around the world with your loved ones is another great way to spend your retirement. Ultimately, though, the key to a happy retirement is simply keeping yourself busy and doing whatever you love. If there's nothing you love doing now, then you'll find that once you have a vast amount of free time, your life will be pretty empty. Now is the time to find out what you want to do when you retire. Question: What can we learn about volunteering from the text? - We can make devoted friends through volunteering. - It can help companies find hard-working workers. - One can even make some money by volunteering. - Almost everyone is willing to help in some way.
**Answer**
One can even make some money by volunteering.

*Question*
Read the following article and select the best answer. Article: The novelist, Harriet Beecher Stowe, born 200 years ago, was a poor housewife with six children, and she suffered from various illnesses. Driven by the hatred of slavery, she found time to write Uncle Tom's Cabin, which became the most influential novel in American history and caused great change, both at home and abroad. Today, however, the book has a different reputation, owing to the popular image of its character, Uncle Tom, whose name has become a saying for a cowardly black man who betrays his race. But this view is wrong: the original Uncle Tom was physically and morally strong, an inspiration for black people and other oppressed people worldwide. Indeed, that was why, in the mid-19th century, Southerners attacked Uncle Tom's Cabin as a dangerously destructive book, while Northern reformers--especially black people--often praised it. The book was influential overseas too. In Russia it inspired Vladimir Lenin, who recalled it as his favorite book in childhood. It was the first American novel to be translated and published in China, and it fueled anti-slavery movements in Cuba and Brazil. The book's progressive appeal was the character of Uncle Tom himself: a strong man who is notable because he does not betray his race; one reason he gives up escaping from his plantation is that he doesn't want to put his fellow slaves in danger. And he is finally killed because he refuses to tell his master where two runaway slaves are hiding. Unfortunately, these themes were lost in many of the stage versions of Uncle Tom's Cabin. The play, seen by more people than those who read the book, remained popular up to the 1950s and still appears occasionally. But in the play, Stowe's revolutionary themes were drowned. But it doesn't have to be that way; indeed; during the civil rights era it was those who most closely resembled Uncle Tom--Stowe's Uncle Tom, not the embarrassed one of popular myth--that proved most effective in promoting progress. Both Stowe and Uncle Tom deserve our reconsideration and our respect. Question: Harriet Beecher Stowe wrote Uncle Tom's Cabin because she _ . - wanted to earn money to support her family - tried to set an example to her six children - hated slavery from the bottom of her heart - had similar life experiences to Uncle Tom
**Answer**
hated slavery from the bottom of her heart