People in the western state of California who are in the United States illegally can now request a driver's license. The law went into effect on January l. California is not the first American state with such a law, but it has the largest number of illegal immigrants. More than a million people began to request licenses shortly after the new state law went into effect. Among them was Christian Alvarado. Mr. Alvarado entered the United States from El Salvador eight years ago without permission from the U.S. government. Some call such people "illegal immigrants." Others call them "undocumented immigrants".

    Mr. Alvarado thinks it so exciting, for he has been waiting for the license for a long time. But some are worried that their personal information will be used to find them and deport them. Armando Botello is a spokesman for the California Department of Motor Vehicles, or DMV. He says people should not be afraid, for such information will not be shared.

    The new licenses are the same as licenses given to citizens except that they have the words "Federal Limits Apply". That means the license cannot be used to travel on an airplane or enter a federal building. Ana Garcia, working at the Central American Resource Center, says some illegal immigrants fear those words will be used to abuse them. Civil rights groups say the police and others will not.

    Dan Schnur, a political scientist at the University of Southern California, said that the main argument against the new law is that it rewards illegal behavior. But Professor Schnur argued that young, white Americans generally support immigration reform, including giving driver's licenses to illegal immigrants

    "It's simply because they grew up in a much more multicultural society than their parents or their grandparents did." Professor Schnur says he believes the changes in beliefs about illegal immigrants that have taken place in California will spread throughout the United States.

    I had just moved to San Antonio, Texas. I worked for the tour bus service taking tourists on a short tour of the city's historic places and would end up at the Alamo.

    I was driving back from my last tour on a cool February day on my way back from the San Femando Catholic church with no one on my bus when I saw a man dressed in rags, thinking this person must be an actor or something walking around. I stopped and asked him, “Need a ride?” Without saying anything he just walked on broad and sat down in seat behind me.

    “Where are you heading?” I asked him. He looked up into the mirror at me and replied. “I've got to get to the fort(要塞)and report to Colonel(上校)Travis that the Mexicans are here!” I laughed to myself thinking that this man was a serious actor.

    “I'm guessing you mean the Alamo?” I said back to him. I looked up and saw he wasn't smiling nor laughing. All throughout the ride he was staring in amazement at all the towering skyscrapers and the buildings along the street.

    “I remember when this town was nothing more than a little trading village!” He finally said to me.

    “So what's your name?” I asked him.

    “Daniel Cloud, yours?”

    “David Zime.” I replied as I turned the corner of the street and laid eyes upon the Alamo.

    I pulled up to the sidewalk and opened the door. Cloud got out of his seat and came up to me.

    “Thanks for the ride.” He said extending his hand. I took his palm and it was freezing cold like he just stepped out of the freezer.

    “Not a problem, Mr. Cloud, and don't worry about the fee. It's on the house.” He nodded his head in gratitude like all us Texans do and walked away.

    It wasn't until then that I noticed that he was soaked(浸；泡)to the bone in dripping water and we had not a single drop of rain in a month or more. I just shook my head and closed the door behind him. When I turned around. Discovered amazingly how fast Cloud had gone away!

    A few days later I was reading a book about the Battle of the Alamo when I discovered the most shocking thing I had ever discovered. The names of the 183 defenders of the Alamo were listed on the roll of honor, including Daniel Cloud, who spotted the Mexicans before they took over the streets of San Antonio in February of 1836, and his post was on top of the San Femando Church where I had picked him up!

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    It's a Saturday morning, and I am eager to fly away.My husband and I will meet up with our son on the other side of the country to learn and explore together.Sitting now at the airport gate,my husband wanders away to stretch his legs.Moments later,he returns and whispers in my ear.I rise and follow him around the comer toward a large window facing the landing area.

    On the road, Marines stand straight and the plane door is open.A white hearse(灵车）is parked nearby.A man and a soldier stand on either side of a woman,supporting her and waiting for what is to come.Airport personnel stand in reverent stillness.A few people place their hands over their hearts,as I have done.We're joined in witness,sending respect to an honorable soldier whose name we'll never know.

    The woman looks heartbroken. She cries, knowing she will never hear "Mom”from her son. She'll never feel his tender embrace or enjoy his sweet peck on her cheeks.Another man's face is twisted because of the grief.His son,the tiny boy he no doubt wrestled playfully,the teen he probably taught to drive,and the son he stood so proudly by,now lives only in his memory.

    Those behind the glass stay silent, reflecting on this loss, as the family and soldiers leave.Some of us women, with sorrowful expressions, move slowly away, sharing a mother's profound grief .Soon,each of us will fly off in planes and return to an ordinary life made extraordinary by this soldier's courage，by this family's sacrifice and by this love shared by all that look out of the window.

    Have you ever noticed tiny raised areas on the branches of a tree? These may have been insects. These small insects feed on tree sap (汁液). Insects on urban trees are notably more abundant than those on rural trees. As a result, urban trees suffer from heavy infestations (害虫横行), and are often unhealthy or die. To protect and restore urban trees' health, we need to determine the factors that make these tree pests more successful in urban habitats.

    Living organisms interact closely with their environment. The warmer, more drought-stressed trees harbor more successful pests than cooler, less drought-stressed trees. As cities and natural habitats become hotter and drier, damaging insects will become more abundant on urban trees.

    Trees within urban forests are valuable economically and for the environmental sustainability (可持续性) of the region. More than half of the world's population lives in cities. Across the globe, people are moving into cities at a faster rate than ever. Rapid growth may turn cities into places with harder conditions. Although cities are primarily made of buildings, roads, parking lots, and vehicles, there are still plants in them. The trees within a city are referred to as the urban forest. Urban forests offer very big benefits to human and environmental health. They improve air and water quality, provide habitat for wildlife, cool down temperatures and beautify our environment. They make cities livable.

    However, being a city tree is not easy. Heat released by human activities is trapped in cities. As a result, temperatures in urban areas are often warmer than their surrounding rural areas. We call this urban warming or the urban heat island effect. Urban habitats are mostly made of surfaces of asphalt (沥青) and concrete. These surfaces reduce the amount of rainwater that reaches tree roots. As a result, urban forests may suffer, which can negatively affect people and the environment.

    What can we do to restore urban forests? Regular irrigation when possible may help keep pest populations under control. Planting tree species that are suitable to handle heat and drought stress would also reduce the occurrence of insect pest outbreaks.

    Jack London, one of America's major writers of adventure tales, was born in California in 1876. During his life, London worked at many jobs. His broad life experiences would become the background for his writing.

    London loved to read. As a teenager, he spent many hours educating himself at the Oakland, California, public library. He attended college at the University of California at Berkeley, but he stayed for only six months. He thought Berkeley was “not lively enough” and wanted to do something more exciting.

    London wrote stories about working people and the hard times they had making a living. He knew their problems first hand. He worked as a sailor, farmer, factory employee, railroad worker, and gold prospector, to name just a few of his many jobs.

    London grew up near the waterfront in Oakland. He loved the water. When he was fifteen years old, he bought a small sailboat called a sloop. Later he sailed to Japan on a schooner, which is a much larger sailing boat. Like many people of the time, London caught the Klondike Gold Rush Fever. In 1897, he headed for Alaska. He didn't find gold, but he discovered something even more valuable. He discovered that people enjoyed listening to the stories he made up with his vivid imagination. London entertained the miners with story after story. Later, using his experiences during the Gold Rush, he created many more colorful stories.

    London resolved to live a full, exciting life. He once said, “I would rather be a superb meteor(流星), every atom of me in magnificent glow, than a sleepy and permanent planet.” Each day, he pushed himself. Once London determined that he was going to be a writer, nothing could stop him. His goal was to write at least one thousand words every day. He refused to stop even when he was sick. In eighteen years, the writer published fifty-one books and hundreds of articles. He was the best-selling and highest-paid author of his day. Many people also considered him to be the best writer. White Fang and The Call of the Wild are his most famous stories and are about surviving in the Alaskan wilderness. Readers can enjoy Jack London's energy and his talent for telling wonderful stories each time they open one of his novels.