阅读下列短文，从每题所给的四个选项（A、B、C和D）中，选出最佳选项。

    Last month, it was my first time to have a bus tour for sightseeing(观光) in Hong Kong. It's really pleasant and interesting. Sitting on the second floor of the bus, I visited Hong Kong in a different way. When the bus passed along the street, all the buildings along the way seemed very close to me. I bought a one­ day pass priced around US $6 to enjoy unlimited (不受限制的) rides on two important routes. I started the trip from Central Star Ferry, and took the H1 Heritage Route (遗产路线) to travel around the Central and Western District. After leaving Star Ferry, the bus passed Western Market and Hollywood Road, where the famous antique (古董) shops are located, then Man Mo Temple. Not only could I see on the bus, I also got off at many stops. I got off in Man Mo Temple and walked along Lascar Row. Then, I got on the sightseeing bus to Dr Sun Yat­sen Museum, which was built in 1914 to honor the father of the Republic of China. And the famous Hong Kong University left a good impression on me. After traveling back through the dried seafood shops without stopping, I went to the last stop at Star Ferry.

    After the heritage journey, I took the H2 Metropolis Route for my shopping tour. I left from Star Ferry and traveled through Wanchai to Causeway Bay and Times Square for shopping. Having bought a lot of things, I went back.

    Though tired, I did have lots of fun on my one­ day bus tour!

    Most people will answer a ringing phone. Usually you don't know who is phoning or how urgent their business is, so a ringing phone is difficult to ignore. In one experiment, a researcher wrote down the numbers of several public phones in stations and airports. Then he called the numbers. Someone nearly always answered. When he asked why, people usually said, “Because it rang.”

A few years ago in New Jersey, a man with a rifle killed 13 people. Armed police surrounded his house but he refused to come out. A reporter found out the phone number of the house and called. The man put down his rifle and answered the phone. “What do you want?” he said, “I'm really busy right now.”

    Imagine you're at work and the phone is ringing in someone else's office. Do you answer it or not? In one survey on telephone use, 51% of participants told researches that they did. We can't ignore the phone and for the reason, it forces its way into our lives. It interrupts what we are doing and on top of that, the caller is often someone we don't really want to talk to. However, in the survey, 58% said they never took the phone off the hook, and 67% didn't mind if someone called during a television programme. For 44% it wasn't a problem if someone rang during a meal, while only 28% were annoyed or upset. If someone phoned in the middle of the night, 40% told researchers that they got nervous or frightened, while around 30% got angry.

    Of course, when someone is really annoying, you can choose to hang up on him/her. This is in fact one of the rudest things you can do on the phone, but 79% said they were prepared to do it in some cases. Only 6% told researchers they never hung up on people.

    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.

    Many animals recognize their food because they see it. So do humans. When you see an apple or apiece of chocolate you know that these are things you can eat. You can also use other senses when you choose your food. You may like it because it smells good or because it tastes good. You may dislike some types of food because they do not look, smell or taste very nice. Different animals use different senses to find and choose their food. A few animals depend on only one of their senses, while most animals use more than one sense.

    Although there are many different types of food, some animals spend their lives eating only one type. The giant panda eats only one particular type of bamboo. Other animals eat only one type of food even when given the choice. A land of white butterfly will stay on the leaves of a cabbage, even though there are plenty of other vegetables in the garden. However, most animals have a more varied diet. The bear eats fruits and fish. The fox eats small animals, birds and fruits. The diet of these animals will be different depending on the season.

    Humans have a very varied diet. We often eat food because we like it and not because it is good for us. In countries such as France and Britain, people eat foods with too much sugar. This makes them overweight, which is bad for their health. Eating too much red meat and animal products, such as butter, can also be bad for the health Choosing the right food, therefore, has become an area of study in modern life.

    Being a volunteer brings me happiness. I work with Volunteers for Wildlife, a rescue and education organization at Bailey Arboretum in Locust Valley. Trying to help injured, displaced or sick animals can be heartbreaking; survival is never certain. However, when it works, it is simply beautiful.

    I got a rescue call from a woman in Muttontown. She had found a young owl(猫头鹰) on the ground. When I arrived, I saw a 2­ to 3­week­old owl. It had already been placed in a carrier for safety.

    I examined the chick(雏鸟) and it seemed fine. If I could find the nest, I might have been able to put it back, but no luck. My next work was to build a nest and settle it in a tree.

    The homeowner was very helpful. A wire basket was found. I put some pine（松树） branches into the basket to make this nest safe and comfortable. I placed the chick in the nest, and it quickly calmed down.

    Now all that was needed were the parents, but they were absent. I gave the homeowner a recording of the hunger screams of owl chicks. These advertise the presence of chicks to adults; they might also encourage our chick to start calling as well. I gave the owner as much information as possible and headed home to see what news the night might bring.

    A nervous night to be sure, but sometimes the spirits of nature smile on us all! The homeowner called to say that the parents had answered to the recordings. I drove over and saw the chick in the nest looking healthy and active. And it was accompanied in the nest by the greatest sight of all—LUNCH！ The parents had done their duty and would probably continue to do so.

    MacArthur's love for sailing dates back to when she was just four years of age, when she first got the opportunity to have a try. "I'll never forget that feeling as a kid of setting foot on a boat for the first time," MacArthur said. "It's kind of struck me that this boat had everything we needed to take us anywhere in the world. And as a child, that opened up everything," she explained how it felt like the "greatest sense of freedom".

    This experience lighted a passion within MacArthur. She knew then that she wanted to sail around the world. She had no idea how to achieve it — growing up in the countryside, it wasn't the most obvious career path — but she knew that was what she wanted to do at some stage. So, she acquired knowledge and saved up for years to seek a career in sailing. She would have potato and beans every day for eight years so that she could save up to buy the right equipment. By reaching certain financial goals and asking technical questions about sailing, MacArthur felt as though she was getting closer to her ambitions.

    "When you know where you're going, you can actually get there — even if it seems impossible. The impossible could be possible and aiming high is not necessarily such a crazy thing to do." And it seems that MacArthur's drive to become a sailor went beyond her expectations. At the age of 24, she started to receive media attention after participating in the Vendee Globe, a single-handed non-stop yacht (游艇) race that goes around the world. She came in second place. Some three to four years later, MacArthur chose to sail for 71 days and 14 hours, covering more than 26,000 miles during the course of her journey. This led to MacArthur scoring a new world record in 2005, as the fastest person to sail around the globe single-handedly. While this record has since been surpassed, MacArthur is still considered as Britain's most successful off shore racer.