【正文】 little humour. B. Some description.C. Extra explanation. D. Special importance.13. What does the study mainly research? A. Gestures’ effects on voice.B. The ways to make gestures.C. The skills of drawing in the air.D. Different gestures around the world. 14. Why can listeners “hear” speakers’ gestures? A. Because gestures go with different amplitudes.B. Because speakers and listeners are too familiar. C. Because volunteers have the same dominant hands.D. Because speakers give secret instructions in their speech.15. Some language researchers disagree with the study because they think ________. A. the body states can municate thoughts B. language is the only way to express oneselfC. the voice can carry body moving informationD. listeners can hear someone39。re trying not to let you.Some language researchers don39。s gestures. When the listener was asked to move their arms to the rhythm, their movements matched perfectly with those of the original speaker.Because of the way the human body is constructed, hand movements influence torso(軀干) and throat muscles. Gestures are tightly tied to amplitude(振幅). Rather than just using your chest muscles to produce air flow for speech, moving your arms while you speak can add voice emphasis. And you can hear someone39。On our day in Zion, we didn’t see any condors, but we drew inspiration from seeing the land called home. Mr. Eaton, now preparing for a trip to Rocky Mountain, says, “I always e back different after being out in nature. ” And I feel quite the same. 4. What was the author’s concern when planning for(去掉for) a visit to Yellowstone?A. The high admission fees. B. The overcrowding of the park. C. The fear of the wilderness. D. The long distance to be covered. 5. Why did the family set for their trip to the National Park?A. To see scenery there only. B. To watch animals living there. C. To get connected with people. D. To avoid being disturbed by others.6. What does the underlined word “seclusion” in Paragraph 6 refer to?A. Musttosee magnificent scenery. B. Untouched wilderness in an area. C. Packs of visitors gathering somewhere. D. Frequentlyvisited attractions. 7. How did the author feel about their trip to the Yellowstone Park?A. It was worth it. B. It strengthened his family ties.C. It spoiled his mood. D. It was dangerous. CResearchers have discovered that beavers (海貍) have a positive effect on the environment. According to a new study, their activity helps to reduce flooding and pollution, and can boost populations of fish and other wildlife.A team of scientists led by Professor Richard Brazier from the University of Exeter studied wild Eurasian beavers living on the River Otter, in Devon, for five years. Beavers build dams in rivers out of branches. These dams create pools of calm water where they can build their homes, which are called lodges. They slide into river banks or use existing holes, with entrances hidden just underwater where they are safe from predators (食肉動物). The researchers found that dams clean the river water because soil and pollution such as wastes and fertiliser (肥料) running off land nearby gets trapped and held by the tangled branches. As a result, there were 37% more fish in ponds created by the dams than in areas without beavers. The dams also slow the speed at which flood water flows downriver after heavy rain, reducing the risk of flooding to farmland and vulnerable villages. In places, the slower water spreads out across nearby unfarmed land, creating new wetlands that are a valuable wildlife habitat. A few small areas of farmland have also been flooded, but the report says this problem can be solved by removing parts of dams, perhaps, or running pipes through them to allow water