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ight or during the day, occupy a small region or an area up to___40___square miles, and live on all sorts of food, from lizards(蜥蜴)and shoes, to ants and melons.Unbelievably people helped coyotes increase when they killed most of the wolves in the United States. The spreading of coyotes into city areas, though, is recent. They travel at night, crossing sidewalks and bridges. running along roads and ducking into culverts (鉆入洞)and underpasses. No one knows why coyotes are moving into cities, but experts explain that cleverer, more humantolerant (不怕人的) coyotes are teaching urban survival skills to new generations.Occasionally, coyotes might attack human beings. There have been about 160 attacks on people in recent years Therefore, people have been consistently told not feed coyotes or leave pet food unsecured. That, plus a large trapping program in the neighborhood, has cur down on the coyote population.63. The underlined word “plasticity” in Paragraph 2refers to _____.A. the ability to fit the environment B. notorious smartnessC. hunting ability D. being humantolerant64. The aim of the passage is to _____.A. tell people how to fight against coyotesB. tell us why the coyote is the most hunted animalC. supply the reason why the coyote is a kind of notorious pestD. explain how the coyote has spread to and survived in cities65. According to the passage, coyote _____.A. originally lived in the west of the continentB. sleep dung the day but look for food at nightC. are teaching survival skills to there younger generationsD. suffered a population decrease because people killed wolves66. According to the passage, to cut down on the coyote population, people are advised to _____.A. leave pct food securedC. force coyotes to live alone B. keep coyotes in small regions D. avoid using trapping programsDThe discovery of a dwarfed (矮個(gè)的)” human being” who lived in Flores. Indonesia. up to 18,000 years ago is changing the way we think about the human family. This “Flores Human” was three foot tall and her brain was smaller than that lf the average chimp (黑猩猩), yet she and her relatives apparently lived fully human lives. They seem to have made tools, worked together to find food and cook it, and perhaps even hurried their dead with ceremony.It was a major surprise to find tools associated with the new human family member. The tools are like those formerly seen only with European fossils (化石) from our own species。 Homo sapiens (智人);and the oldest of them were made 94,000years ago. Homo sapiens is thought to have arrived in the island about 40,000 years ago,much too late to be responsible for the tools. If this tiny human made the tools, them the inside structure (結(jié)構(gòu)) of its brain must have been more like our own than a chimp?s,despite being just a third the size of ours.This “new human” was suspected to be a dwarfed ranch of Homo erectus (直立人). When creatures are separated in regions with rare resources but few enemies, being big is a disadvantage, and evolution tends to shrink them, a process known as island dwarfing.Could natural selection make a human smaller while keeping — even improving — mental ability?Quite possibly, believes Christopher Wills of the University of California.Has the “Flores Human” even shown the ability of language? “I find it difficult to imagine that people could make tools, use fire, and kill large animals without fairly advanced munication. ” Wills says. Did “Flores Human” possess the basic ponents of hu