Read the article and select the best answer. Article: They like using the Internet. They have lots of pocket money to spend. And they spend a higher proportion of it online than the rest of us. Teenagers are just the sort of people an online seller is interested in, and the things they want to buy-games, CDs and clothing-are easily sold on the Web. But paying online is a tricky business for consumers who are too young to own credit cards. Most have to use a parent's card. They want a facility that allows them to spend money. That may come sooner than they think: new ways to take pocket money into cyber space are coming out rapidly on both sides of the Atlantic. If successful, these products can stimulate online sales. In general, teenagers spend huge amounts: $153bn (billion) in the US last year and PS20bn annually in the UK. Most teenagers have access to the Internet at home or at school-88 percent in the US, 69 percent in the UK. According to the Jupiter Research, one in eight of those with Internet access has bought something online-mainly CDs and books. In most cases, parents pay for these purchases with credit cards, an arrangement that is often unsatisfactory for them and their children. Pressing parents to spend online is less productive than pressing on the high street. They are more likely to ask "Why?" if you ask to spend some money online. One way to help teenagers change notes and coins into cybercash is through prepaid cards such as InternetCash in the US and Smart cards in the UK. Similar to those for pay-as-you-go mobile telephones, they are sold in amounts such asPS20 or $50 with a concealed 14-digit number that can be used to load the cash into an online account. Question: What is the passage mainly about? Options: A: Online shopping traps. B: Internet users in the US and the UK. C: New credit cards for parents. D: The arrival of cyber pocket money.
D

Read the article and select the best answer. Article: As demand for power and fuel grows steadily in the coming decades, we must consider every possible energy source on hand if we're to meet the world's needs. And because clean natural gas is found in great plenty, there is little doubt that it will play a major role on the world energy stage in this century, much like oil did in the last. But, like oil, gas reserves are concentrated in just a few places in the world, usually far from where they're needed most. And that's only part of the challenge. The world has had well over 100 years to search for oil and to build the necessary facilities to bring it to market; the natural gas facilities, particularly when it comes to liquefied natural gas(LNG), are not nearly as developed. So what needs to be done? On the supply side, producing nations need policies that allow for better development of their natural gas in an open, stable business environment, not _ in which the rules of the game change without warning. The governments of consuming nations, on the other hand, must make policies for sustainable development to ensure they'll have enough supplies in the future. That means building the related facilities, including LNG stations. This, in turn, will require coastal areas to allow these necessary, but not necessarily pretty, facilities to be built in their backyards. And energy companies have a responsibility to be good neighbors in those areas by operating these facilities responsibly and safely. They must also continue to put in the billions of dollars needed to build the complex transport and storage facilities required to bring more gas to market. Expanding and diversifying energy sources by using more natural gas could lead to lower fuel prices and to greater energy security. We've taken some of the steps to get started, but we need your help to get the rest of the way. Question: The main purpose of the passage is to _ . Options: A: warn people of the lack of power and fuel B: discuss the importance of oil and natural gas C: call for better use and development of natural gas D: instruct people how to make use of energy sources
C

Read the article and select the best answer. Article: WASHINGTON -- President Obama and his wife, Michelle, handed out Halloween treats to area children and military families at the White House Sunday evening. Local students between 6 and 14 years old, along with children from military families, were invited to celebrate Halloween on the North Lawn. The president and first lady, along with Mrs.Obama's mother, Marian Robinson, spent about 30 minutes passing out goodie bags.Obama wished each child a happy Halloween as he distributed the treats, pausing occasionally for hugs or to comment on costumes. Later, the military families continued the celebration inside the White House. The first couple joked to assembled reporters about children walking the long driveway in order to work off the snacks."This is the Let's Move method of trick-or-treating ," Obama said, referring to Mrs.Obama's campaign to combat childhood obesity . The goodie bags contained a box of White House M&Ms, a cookie made by pastry chef Bill Yosses, and dried fruit. As they made their way across the lawn, the children meet a vast range of costumed characters ranging from a spooky Frankenstein (,<<>> ) to the Scarecrow from "The Wizard of Oz." Music from a jazz band dressed in pirate gear rang out across the White House grounds. Multicolored pumpkins and gourds lined the driveway -- individually, in gravity-defying stacks and as part of a large mound over 5 feet tall.Pumpkin-headed scarecrows made of cornstalks loomed over the path with menacingly raised arms.Under the White House portico, a mobile resembling bats flying through clouds fluttered around a lantern. Some of the local trick-or-treaters were students at Bancroft Elementary, which helps tend the first lady's White House garden, and Tubman Elementary, which has a relationship with the White House chefs. After trick-or-treating ended, the Obamas stood near the front door, welcoming the military families inside, helping children climb the short flight of steps and thanking parents for their service. Question: What is the news report mainly about? Options: A: President Obama and first lady celebrated Halloween with children. B: President Obama and his wife Michelle handed out Halloween treats to children. C: Children from military families were invited to celebrate Halloween at the White House. D: Trick-or-treaters met a vast range of costumed characters from Frankenstein to the Scarecrow.
A