Read the article and select the best answer. Article: I climbed Kilimanjaro with Lava Expeditions during the rainy season. I flew to Nairobi in Kenya and spent several days there. At my hotel in Nairobi I met the rest of the group with whom I would spend the next week. We all travelled on the bus together for a 6-hour journey into Tanzania and then Arusha , a quiet town. After we arrived at our hotel in Arusha , we had dinner and a few drinks. Then we were introduced to more members including Taddeus Minja, the main guide, who was very experienced -- climbing Kilimanjaro runs through the generations of his family. The next day the Lava Expeditions members checked if we had the correct and enough clothing for our expedition on Kilimanjaro. Only one person needed to bring more clothes. After that we set off, walking in the rain through the beauty of the rainforest, all the way to the first camp. I was happy the next few days as the view was so wonderful and changed every day. I suffered a little during the trip and I felt so tired. But the members of Lava Expeditions provided me with lots of encouragement, which was one of the best memories. Finally we reached the top of Kilimanjaro in bright blue skies. I felt excited about climbing Kilimanjaro and the feeling didn't change during my trip. Lava Expeditions looked after me so well that I was deeply thankful for their help. Question: How did Lava Expeditions help the author while climbing Kilimanjaro? Options: A: By carrying bags for him. B: By offering food to him. C: By encouraging him. D: By teaching him climbing skills.
C

Read the article and select the best answer. Article: Imagine a house that keeps itself warm in the wintertime. Think of the savings in terms of fuel bills and unfriendly emissions. Such houses in fact exist, called "passive houses". The concept of these highly energy-efficient buildings took root in the 1990s, before slowly consolidating as a niche construction concept in the 2000s. Are passive houses now actively moving into the mainstream as sustainable buildings? For Brian McGarry, an economics lecturer who built a family house based on passive housing criteria in the Pyrenees this year, the arguments look convincing. As his first full winter in the low energy house draws in, we asked him to keep us informed. Do passive houses work? I had never heard of a passive house in February 2012, when I purchased a plot of land. Nor did I expect that I would be persuaded to build a pre-constructed, custom-designed house based on energy-efficient passive house criteria. It promised to be easier and quicker to build, cheaper to run, and more comfortable to live in. The objective was to incorporate the fundamental concepts of passive energy management into my project: an airtight and highly insulated building envelope; large southfacing double or triple-glazed windows (if possible, filled with argon gas) that passively capture the energy of the sun; a heat recovery ventilation system to provide fresh air; and a simple, low-cost heating system consisting of a modern wood-burning stove, a bathroom heater and a portable radiator backup for when the sun doesn't shine and temperatures decline. No significant limitations were placed on the design, and it had excellent environmental credentials. Moreover, the cost was no more than a conventional build. After six months in use, the house is proving to be both cheap to run and remarkably comfortable-staying cool in the hot summer was effortless, as long as the windows were shuttered or shaded from the sun. Nowstaying warm in the cold, high-altitude December climate also seems easy, so far. Winter arrived in force in the... Question: What is the writer's attitude towards the passive housing? Options: A: supportive B: critical C: oppositive D: doubtful
A

Q: Read the article and select the best answer. Article: She handed me a five dollar bill through the car window, then turned and walked away. I don't know her name, nor where she was going ,but I know I will never forget that stranger who generously saved me from a lot of frustration and prevented me from walking a mile or more to my destination. That day My husband, Leo, and I were already a half hour late for an important conference . We had taken the wrong fork in the expressway, and found ourselves stuck in traffic that was blocked for four miles due to a serious accident. When we finally were able to exit, we tried to find parking lots near the hosting hotel. But they were all full. Not expecting this, neither of us had brought change; all we had was a twenty dollar bill. When we did find some space in a lot two blocks away from the conference, we were unable to pay the automatic box for parking. So we needed five dollars. We asked several people approaching the pay box if they could change a twenty. "No", "No", "No" were their answers. So, _ , we walked back to our car, got inside, and started to back out. We were going to look for other parking spot on the street that would surely have taken us a longer distance away. Just then, one tapped on the window on the passenger side. It was a short, medium-built woman, who was all bundled up in jacket and scarf, wearing jeans and boots. Surprised, I was reluctant, at first, to roll the window down. What could she possibly want? I lowered the window just enough to hear what the woman had to say. Through the window, she shoved a five dollar bill. "I don't have change," she said, "but here is an extra five dollar bill. Use it to pay for your parking spot." I was floored! Was this woman, whom I'd never seen before, actually giving me this much money? Yes, that was exactly what she was doing! She wouldn't take the check I offered her for the cash. She just walked away. Question: The author writes the text to _ . Options: A: warn readers of the difficulty with parking B: express her gratitude to the stranger C: talk about her bad experience D: call on readers to lend a helping hand if possible
A: B

Q: Read the article and select the best answer. Article: Grasshoppers are having to change their song -- one of the iconic sounds of summer -- to make themselves heard above the noise of road traffic, ecologists have discovered. The study, published in the British Ecological Society's journal Functional Ecology, is the first to show that human-made noise affects natural insect populations. Animals use sound to communicate for many reasons, including marking out territory, warning of predators and finding mates, and although previous research shows birds, whales and even frogs change their calls in noisy environments, the impact of human-made noise on insects has been neglected until now. Ulrike Lampe and colleagues from the University of Bielefeld in Germany caught 188 male bow-winged grasshoppers, half from quiet locations and half from beside busy roads. The grasshoppers use their song to attract mates. The team then studied the differences in the two groups' songs in the laboratory. To encourage them to sing they exposed the males to a female grasshopper, and then recorded their courtship songs. Analysis of almost 1,000 recordings revealed grasshoppers living beside noisy roads produced different songs to those living in quieter locations. According to Lampe: "Bow-winged grasshoppers produce songs that include low and high frequency components. We found that grasshoppers from noisy habitats increase the volume of the lower-frequency part of their song, which makes sense since road noise can mask signals in this part of the frequency spectrum ." The team's findings are important because traffic noise could be upsetting the grasshopper's mating system . "Increased noise levels could affect grasshopper courtship in several ways. It could prevent females from hearing male courtship songs properly, prevent females from recognizing males of their own species, or _ females' ability to estimate how attractive a male is from his song," Lampe explains. Having discovered that human-made noise affects insect communication, the researchers now want to learn more about how... Question: The author wrote the article to _ . Options: A: introduce how grasshoppers make noises to attract mates. B: raise the awareness of protecting bow-winged grasshoppers. C: inform us of a recent discovery of ecological research. D: warn us that human-made noise has changed ecological system.
A: C