Read the following article and select the best answer. Article: Most of us are used to seasons. Each year, spring follows winter, which follows autumn, which follows summer, which follows spring. And winter is colder than summer. But the earth goes through temperature cycles over much longer periods than those that we experience. Between 65,000 and 35,000 years ago, the planet was much colder than it is now. During that time the temperature also changed a lot, with periods of warming and cooling. Ice melted during the warm periods, which made sea levels rise. Water froze again during the cold periods. A new study from Switzerland, sheds light on where ice sheets melted during the ice age. It now seems that the ice melted at both ends of the earth, rather than just in either northern or southern regions. This surprised the researchers from the University of Bern. Scientists have long assumed that most of the ice that melted was in the Northern hemisphere during the 30,000-year long ice age. That belief was held because the North Pole is surrounded by land, while the South Pole is surrounded by the Antarctic Ocean. It is easier for ice sheets to grow on land. If surrounded by sea the ice can easily just slip into the ocean instead of building up. The researchers used a computer model to look at ways the ice could melt and how it might affect sea levels. They compared these results to evidence of how temperatures and currents actually changed during that time. The model showed that if it was only in the Northern hemisphere that ice melted, there would have been a bigger impact on ocean currents and sea temperatures than what actually happened. Studies suggest that melting just in the Southern hemisphere would have been impossible, too. The only reasonable conclusion, the scientists could make, was that ice melted equally in the North and the South. It is still a mystery as to what caused the temperature changes that caused the ice to melt. Question: The scientists are not sure _ . - how long the ice age lasted - where ice sheets melted during the ice age - what caused the temperature changes - what the earth is made up of
what caused the temperature changes

Read the following article and select the best answer. Article: There are many places around the city and online to buy Las Vegas show tickets. With dozens of websites you can find at home, ticket box offices, Tix 4 Tonight (one of the two half-price ticket sellers) locations, and ticket sellers along the Las Vegas trip, you might wonder where you could find your best deal. Major Shows If you want to see one of the top shows in Las Vegas, you could buy your tickets online before your trip. Many of these shows sell out months ahead of time, so make sure you do your research. Best Place to Buy Discounted Tickets If you want discounted tickets for Las Vegas shows, you should go to one of the four Tix 4 Tonight locations. These locations get tickets early in the morning or throughout the day if shows are not sold out. Do not expect to find discounted tickets here for the hottest shows in town such as one-night concerts or shows like Celine Dion's. These seldom make their way to Tix 4 Tonight. Coupon books As you walk along the Las Vegas Strip, you are going to come across people handing out the Vegas Values coupon books or other coupons. These may help you find discounted coupons for various shows around town. Tickets bought with coupons have to be bought at the box office for the show. These are usually located near the theater used for the show. On-Strip Sellers If you see people standing on the Strip selling show tickets, make sure you avoid them. While a few of these sellers might be legitimate ,they often cheat people by selling counterfeit tickets. Catching a show in Las Vegas is one of the various activities people take part in every single day. While there is not one set place to be the best to buy tickets, make sure you get to see the show you want. Question: If you want to see Celine Dion's performance, you should buy the tickets _ . - from the tickets sellers along the Strip - through online shopping - at the Tix 4 Tonight locations - on the day of the performance
through online shopping

(Q).
Read the following article and select the best answer. Article: Seventeen-year-old Randy Waldron, Jr., was shocked when he applied for his first credit card and was denied. He was even more shocked by the reason: He failed to repay thousands of dollars in debt. Waldron's identity had been stolen by his father, who left when Randy was learning to walk. From 1982 to 1999, Randy Waldron, Sr., used his son's Social Security number to obtain credit from various merchants and lenders, then racked up tens of thousands of dollars in debts. He declared bankruptcy in his son's name, which resulted in default judgments against the younger Waldron. It has taken Randy Jr., now a 24-year-old flight attendant, years to untangle the mess. Waldron isn't alone. Identity theft is this country's fastest-growing crime -- and, increasingly, ID thieves are targeting children. Their clean credit and absence of criminal histories make them ideal victims. Linda Foley, co-executive director of the Identity Theft Resource Center inprefix = st1 /San Diego, estimates that at least 400,000 children had their identities stolen in 2005, more than double the number in 2003. Waldron's case is typical: The resource center estimates that two-thirds of child ID thefts are committed by family members. Some dishonest persons use children's names and Social Security numbers to ring up massive debts; others use children's identities in place of their own when caught committing other crimes; still others sell identification information on the black market to illegal immigrants, fellow criminals or even terrorists. The theft brings its victims enormous financial and emotional trauma, in part because the identity abuse often goes undetected for years. Dealing with child identity theft after it happens is extremely difficult. Laws in many states are insufficient to handle the crime's complexity, and financial institutions are often less than helpful. Randy Waldron, Jr., has worked tirelessly for eight years to straighten out his credit record, and he continues to deal with the fallout. "It's been a very... Question: Why do children easily become the targets of identity theft? - Because they cannot read or write at a young age. - Because they have empty credit and criminal records. - Because they are too young to protect themselves. - Because identity theft can't be found in time.
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Because they have empty credit and criminal records.