Read the following article and select the best answer. Article: First it was jogging. Then aerobics . Not too long ago, Americans discovered race walking. Now Americans are into a newfitnesscraze. They'retaking up bicycling. Over hills and down mountainsides and across quiet country roads, Americans are busily rolling along. The number of adults who ride for fitness is around 17 million, an increase of 70 percent over four years ago. Twice as many women as men are coming to the sport. Americans arefalling in love withbiking because it has speed, the benefitsofjoggingand beautiful scenery. Bicycling is a very appropriate sport, which is important to people who injured their knees while jogging or whosejointsareachingfrom aerobics. And biking is a real awakening for people who have been into race walking in the past. Race walking isas dull as watching paint dry. The most popular kind of bicycle for people who are new to the sport is the mountain bike, which has afixed framewith wide tires andupright handles. Mountain bikes also have manygears to make it easier to climb hills. About 5 million Americans ride mountain bikes, compared with 200,000 who rode them only five years ago. Costsrangefrom about $130 for abottom-of-the-linebicycle to more than $2,700 for an expensive bicycle. Mountain biking has attracted somepeoplewho race down the sides of mountainslike a bat out of hell. But most riders ride slowly and theyrarelyventurefar from home. The biking craze has brought an unexpected profit to clothing and bicycle accessory makers. Last year, bikers paid $ 630 million for biking clothes and accessories. Bicycling seems likely to continue its fantastic growth. Question: The bicycling craze has been a profit for _ . - people who want to ride like a bat out of hell - bicycle accessory makers - race walkers - twice as many women as men
bicycle accessory makers

(Question)
Read the following article and select the best answer. Article: Having a child may improve a woman's memory, a new study suggests. In the study, women who were new mothers scored better on tests of visuospatial memory - the ability to understand and remember information about their surroundings--compared with women who didn't have children. The findings contradicts the old belief that women develop"baby brain" or a decline in memory and cognitive function, after they have kids, said study researcher Melissa Santiago, a doctoral student at Carlos Albizu University in Miami. "You don't have to feel that because you have kids, your memory isn't the same," Santiago said. The study was small, and the findings will have to be tested in larger groups of people, Santiago said. Previous studies on the topic have had mixed results--some showed motherhood hurts cognition, and others showed the opposite. Studies on rats show those with pups have better memory than those without offspring. Santiago analyzed information from 35 first-time mothers whose children were ages 10 to 24 months, and 35 women who had never been pregnant. Both groups scored similarly on intelligence tests. The average age of mothers was 29 and the average age of never-pregnant women was 27. To test visuospatial memory, the women were shown a paper containing six symbols for 10 seconds, and then asked to draw what they remembered. This task was repeated several times. The first time women were shown the paper, both groups remembered about the same amount. But on the second and third pass, mothers performed better than those without children, indicating that the mothers collected more information each time than the other women. Later, the women were shown a variety of different symbols, and asked to remember which ones were presented on the earlier task. Mothers did not make a mistake in this task--they remembered every symbol correctly--but those without children made one or two errors, Santiago said. Question: How did Santiago lead to the findings? - By observation. - By comparison. - By analyzing intelligence tests. - By asking women questions.
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By comparison.

Question: Read the following article and select the best answer. Article: One in 400 children in the United States has diabetes . And the most difficult thing for the young diabetic patients is that many of them don't have a clear idea when they need to take insulin(a drug used in treating diabetes).The parents of one Long Island boy found the perfect solution--Hero, a specially trained dog that can discover when a diabetic is in trouble and find help. Johnny Pion, eight years old, is a poor kid that was told he was a diabetic in 2008. He can't do without insulin. His blood-sugar levels should be closely checked. He even can't go out to play without his mom or dad fearing he might need help. With Hero in her new home, Johnny's parents may worry a little less. They received the news about Hero on the newspaper. The dog cost around $20,000. With the help of friends and family, the Pions brought Hero home from Warren Retrievers in Virginia. Mary Campbell. Hero's trainer, said the dog could discover the slightest changes in blood sugar by her sense of smell."Humans have 5 million smell receptors ; dogs have 5 billion smell receptors,"she said. When the dog discovers something's wrong, she'll rub her head against Johnny's legs. If he doesn't answer her, Hero knows to look for Johnny's mom and dad. Hero even could ring up 911. On their first night, Johnny's was comfortably sleeping in his own bed with Hero and not with his parents for the first time. Night time is very important because blood sugar goes unchecked while sleeping. Now Hero is a round-the-clock nurse. Question: Young people with diabetes have difficulty _ . - telling when they need to take medicine - finding what is he best medicine for them - remembering the names of their medicine - knowing how to keep healthy and live a longer life
Answer:
telling when they need to take medicine