Read the following article and answer the question. Article: If you lose your wallet, how often do you think someone will be kind enough to return it to you, with cash and credit cards? Some people may be greedy, and others are simply too lazy to bother with the trip to the post office to send back a wallet to a stranger. But according to a psychology study by Dr. Richard Wiseman, there's one thing that'll greatly increase your odds of being reunited with a lost wallet: a photograph of a cute baby. In the study, hundreds of wallets were scattered around the streets of Edinburgh, Scotland. The psychologists wanted to see how many strangers would take the trouble to return them to the addresses listed on the drivers' licenses inside--but more than that, they wanted to find out what would make a person more likely to help out a stranger. To finish this, they included personal things in most of the wallets: some included a photo of a happy elderly couple, some contained a cute puppy, some contained a family portrait, and some held a photo of a lovely baby. Others had receipts showing that the wallet's owner had recently donated to a charity . Some contained no personal details. As the psychologists soon discovered, the sight of a smiling baby is enough to warm nearly any heart: only one in ten of the strangers who _ such wallets did not return them. In contrast, the second most successful image, the puppy, had a 53% return rate. When the wallet included no photograph, it stood only a one in seven chance of being returned to the owner. The success of the baby photograph shows a human compassion for the young that's been passed down through the ages, according to Dr. Wiseman. "The baby kicked off a caring feeling in people, which is not surprising from an evolutionary perspective ," he told theTimes. To ensure our species' survival, scientists think that we must feel empathy and compassion for our young. Scientists say that this study supports the argument that we won't feel compassion only for our own babies, but for any that we see--hence, the strong desire a stranger... Question: The main purpose of the psychologists' leaving hundreds of wallets around was to find out _ . Answer:

OPTIONS:
- whether people were as honest as before
- what made people willing to help strangers
- what kind of feelings could be caused by a smiling baby
- how evolution influenced human beings

Answer: what made people willing to help strangers

Read the following article and answer the question. Article: Vans, Keds, Dollies--they sound like the names of rock bands, but if you have teenagers, you'll know they're actually the latest in teenage footwear. But experts are now warning that the current shoe fashions will be causing teenagers discomfort in the short term and storing up years of foot, knee and back pain in the future. Here, the experts identify the problems caused by teenagers' shoe choice. KEDS/VANS Slip-on shoes with elastic sides are particularly popular among teenage boys-with Keds and Vans the most sought-after brands. The main problem is that they are just too flat--so flat that the heel, which strikes the ground first, also becomes damaged and painful. BALLET PUMPS The worst shoes of all are such light and thin dolly shoes. The problem is partly their flatness, as with Keds and Vans. However ballet pumps, which have no string or heel, have other specific problems. "As the shoe has no fastening device, it relies on the toes to keep the shoe on, causing an awkward gait ,this leads to short-and long-term problems such as calluses ,heel and knee pain." WEDGES AND STILETTOS These shoes can also cause problems with gait, They may look good, but the heels on these are so high they can force the wearer's body weight forward, making them very unstable. Teens who wear these shoes regularly are also in danger of joining those millions of women with constant back pain. SCHOOL SHOES So what do podiatrists have on their wish list, especially for everyday wear? Something in a natural, breathable fabric, with a string to hold it on, with a small heel and a deep toe-box that does not press the toes, such as Clark's, Marks & Spencer or Rhino. If your teen insists on wearing 'bad' shoes, get them some simple foot orthotics in the shoes. These support and correct the movement of the foot and, properly fitted by a podiatrist, can often transform their walk and halt the damage. Question: From this passage we can infer_. Answer:

OPTIONS:
- trendy shoes may ruin teenagers' health
- fashionable shoes all have orthotics in them
- experts are strongly against wearing popular shoes
- podiatrists are expert at producing branded shoes

Answer: trendy shoes may ruin teenagers' health

Read the following article and answer the question. Article: An allergy is a strong reaction to a substance. Many things can cause allergies. The most common cause is pollen , which is usually produced by trees in the spring, grasses in the summer and weeds in the fall, as part of their reproductive process. Other causes include organisms, chemicals, plants and dead skin particles from dogs and cats can also cause allergic reactions. So can insect stings and some food. The most common kind of allergic reactions is itchy , watery eyes and a blocked or watery nose. Allergies can also cause red, itchy skin. Some reactions can be life-threatening, for example, when breathing passages become blocked. It is not always easy to avoid allergies. Drugs may offer an effective treatment. Another treatment used in some cases is called immunotherapy. A patient is injected with small amounts of the allergy-causing substance. The idea is that larger and larger amounts are given over time until the patient develops resistance in his body. In the United States, experts estimate that up to 8% of young children have food allergies. Every year these allergies cause about 30,000 cases with severe reactions that require immediate treatment. It can result in breathing trouble and in some cases death. It is said that about 100 to 200 people will die. It is said that most of the reactions are caused by peanuts and tree nuts like walnuts. People can also be allergic to medicines. The American Academy of Allergy, Asthma and Immunology says about 10% of bad reactions to commonly used medicines are allergic. In other words, a person's immune system overreacts and produces an allergic reaction. The most common reactions include skin rashes, itching, breathing problems and swelling in areas such as the face. Question: Allergies seldom occur in winter because _ . Answer:

OPTIONS:
- plants don't usually flower in cold weather
- people usually wear thick clothes
- pollen is active below freezing point
- the weather is too cold for viruses

Answer:
plants don't usually flower in cold weather