As I stood in the return line and watched people, I became extremely impatient. My daughter had got four Barbie dolls and two identical Cabbage Patch Kids on Christmas, so I was eager to return toys that she didn't need. Suddenly a strong idea came to me. I eyed the lady in front of me with three small girls on her leg. The family looked poor. The children were without coats, and they had dirty faces and hair. “You are ready to get out of here, aren't you? Give her the things you want to return,” the still voice spoke. “Give them to her? These are mine. I'm not giving her my stuff,” I argued. I swallowed the urge that threatened to escape my lips when the voice spoke again. “Give her the toys.” I was familiar with the voice. I know I couldn't argue with that voice.

    I sighed and tapped the lady on the shoulder. “Ma'am,” I cleared my throat. She looked at me with kind, tired eyes surrounded by wrinkles. “Yes?” she asked. “Would your little girls like to have these toys?” I pointed to my basket full of returns. “Would your children like to have them?” She was speechless, and I swore that tears were about to well up in her eyes. “You'd be doing me a favor. I can't stand in this line in a moment longer.” “You have no idea,” she shook her head. “You have no idea what that means to me.”

    I started loading her basket as the excited girls watched. “Merry Christmas,” I said, “God bless you.” She replied as I nodded and exited the line. I didn't want to go the Walmart that day, but I went. I didn't want to give the lady my kid's toys, but I did. Sometimes doing what we don't want to do is exactly what we're supposed to do.

Top attractions

    Amsterdam is most famous for its artistic heritage. This tradition is proudly on display in the Rijksmuseum (translates as State Museum). Once you've taken in all that has to offer, artists, history fans, and families shouldn't pass up the chance to visit the Van Gogh Museum-containing around 700 paintings and drawings by Vincent and his contemporaries, including Gauguin, Monet, and Toulouse-Lautrec.

    Amsterdam is also home to the Anne Frank Museum, where Anne hid with her family during the Nazi occupation of the Netherlands. On a lighter note, taking a canal cruise through its extensive waterways is a rewarding way to see the Dutch capital.

    Art lovers get their kicks at:

     The Van Gogh Museum Rijksmuseum Museum het Rembrandthuis

    Food and drink

    Cheese lovers love Amsterdam. You can find an excuse to eat cheese at any time of the day here. Gouda is Holland's favorite, developing a more intense flavor the longer it's aged. Find a selection at the markets, try a cheeseboard at dinner time, or just order cubes with mustard for dipping to accompany a drink.

    When you're hungry for non-cheese food groups, you'll find Michelin-starred restaurants, vegetarian, and organic restaurants that accompany an array of global cuisine. For old-fashioned and modern Dutch food, try these Amsterdam restaurants: Moeders, Haesje Claes, Loetje, Greetje, and De Silveren Spiegel.

    Don't leave without tasting:

     Patat (hot chips with toppings) Stroopwafel (waffle cookie) Chocomel (chocolate milk)

    Amsterdam Fast Facts

    Approximate flight times:

     NYC/Newark 7 hours, 20 minutes Philadelphia 8 hours Boston 7 hours

     Miami 9 hours, 45 minutes Los Angeles 10 hours, 15 minutes

    Entry requirements: Passport must be valid for at least 3 months beyond your planned departure from the Schengen area and have 2 blank pages for entry stamp.

    Asking a patient to hum(哼唱)piano tunes and play fin instrument while undergoing brain surgery(手术)may sound like a strange request from a doctor．However，that is exactly what a team of brain specialists，led by Pilcher，requested Dan Fabbio to do．

    In 2015，the then 25-year-old musician was diagnosed with a brain tumor(肿瘤)，which was located in the part of the brain known to be active when people listen to and make music．“Removing a tumor from the brain can have significant consequences depending on its location，”Pilcher says．“Both the tumor and the operation can damage tissue and affect communication between different parts of the brain．”

    Fabbio，therefore，feared the surgery would cause him to lose his musical ability．To prevent that from happening，Pilcher and his colleague designed many tests，including asking Fabbio to listen to piano tunes and hum back during MRI scans．This enabled the physicians to locate the area that is vital for music and language processing and create a 3-D map of Fabbio's brain．

    Despite the great starting point，it was not a perfect way to prevent possible damage to the．The only way was to keep the patient awake and ask him to hum piano tunes during the surgery so that the surgeons could identify the areas to avoid．While the surgery went smoothly，the real test came when Fabbio was asked to play a song on his saxophone．The tunehad been simplified to ensure that it would not require too much strength and cause harm to the stitches(缝线)in the brain．He played it faultlessly，and when he finished，the entire operating room erupted in applause．

    The researchers say that a year after the groundbreaking surgery，the young musician can once again hear tunes in everything—even his electric toothbrush．

    Steven Stein likes to follow garbage trucks. His strange habit makes sense when you consider that he's an environmental scientist who studies how to reduce garbage, including things that fall off garbage trucks as they drive down the road. What is even more interesting is that one of Stein's jobs is defending an industry behind the plastic shopping bag.

    Americans use more than 100 billion thin plastic bags every year. So many end up in tree branches or along highways that a growing number of cities do not allow them at checkouts (收银台). The bags are not allowed in some 90 cities in California, including Los Angeles. Eyeing these headwinds, plastic-bag makers are hiring (聘请)scientists like Stein to make the case that their products are not as bad for the planet as most people assume.

    Among the bag makers' arguments: many cities with bans（禁令）still allow shoppers to purchase paper bags, which are easily recycled but require more energy to produce and transport. And while plastic bags may be ugly to look at, they represent a small percentage of all garbage on the ground today.

    The industry has also taken aim at the product that has appeared as its replacement: reusable shopping bags. The stronger a reusable bag is, the longer its life and the more plastic-bag use it cancels out. However, longer-lasting reusable bags often require more energy to make. One study found that a cotton bag must be used at least 131 times to be better for the planet than plastic.

    Environmentalists don't doubt these points. They hope paper bags will be banned someday too and want shoppers to use the same reusable bags for years.

    When an earthquake hit a small town, many houses fell down. After the earthquake, all the newspapers reported many stories about some of the families who were in trouble.

    One Sunday, when I was reading a newspaper, a special picture touched me. It gave the clothing sizes of each family member. I thought that this would be a good chance to teach my children to help those who were less lucky than themselves. I said to my seven-year-old twins, Brad and Brett, and three-year-old Meghan, "We have so much, and these poor people now have nothing. We'll share what we have with them."

    I filled a box with foods and clothes. While I was doing this, I encouraged the boys to choose their toys and donate some of their less favorite things. Meghan watched quietly as the boys took out their old toys and games and put them together. Then she walked away. A few minutes later, she came back with Lucy, her much-loved doll. She put the doll on top of the other toys. "Oh, dear," I said. "You don't have to give Lucy. You love her so much." Meghan said, "Lucy makes me happy, Mommy. Maybe she'll make another little girl happy, too."

    I looked at Meghan for a long moment. She taught me a lesson. It's easy to give something that we don't want any more, but hard to give what we cherish(珍爱), isn't it?

Yosemite is a national park in California. It is very beautiful and big. The park includes more than 760,000 acres in the California Mountains. Most of the park is wilderness.

The part of Yosemite that everyone likes is Yosemite Valley. It is a tiny valley that is 7 miles long and less than 1 mile wide. It has tall rock walls and streams that splash down in waterfalls. More than two million visitors come to the valley each year.

One ranger (守护人) says the number of visitors is more than the land can handle. The valley has 4,500 camping spots. It has a hotel that can hold 4, 000 families. This is still not enough to handle all of the visitors. The valley has grown so big that it has a lot of traffic and crime.

A worker says the park is trying to keep the beauty of the park and let everyone visit. Some areas have been fenced off from people and planted with seeds to try to keep them beautiful.

A former worker thinks Yosemite should get more money to take better care of the park. He would also like to teach people what the park service is trying to do.

Some people are trying to save Yosemite Valley. A plan has been made to get rid of some buildings. There will be fewer cars allowed inside the park. More buses will help get people around.