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  3. [img]2016m3x/ct_eyyjsbz2014c_eyyjsbcloze_0226_20163[/img] The wild boar is t

[img]2016m3x/ct_eyyjsbz2014c_eyyjsbcloze_0226_20163[/img] The wild boar is t

游客2023-10-15  11
问题
    The wild boar is the ancestor of the domestic pig, but it is very different in terms of its【C1】beh______and appearance. The boar is distinguished by its large, sharp and strong tusks,【C2】______ serve as weapons and tools. They are quite【C3】______(impress)animals in terms of their size and weight and Romanian and Russian boars can reach up to 300 kilograms.
    They generally live in woodland areas and although many people fear this animal and its strength, it tries to keep humans at a【C4】______. These animals are admired for their intelligence. They are masters of【C5】sur______, hiding out in areas that are【C6】______(inhabit) by man, and their life expectancy is between fifteen and twenty years. However, the boar is vulnerable to hunters. The boar’ s primary defense is its speed but when they are cornered they can be ferocious. Wild boars are not usually【C7】dan______but they are aggressive, especially if they are injured, or if the animal is a female, defending its young.
    Another interesting fact about these animals is that they are quite vocal and【C8】com______, and are constantly grunting to each other, and squeal when alarmed. They are omnivorous animals that have a varied diet. During the【C9】su______they generally eat green plants, nuts and fruit. In winter, when the rain【C10】______(soft)the ground they dig to find insects and vegetables. [br] 【C2】
选项
答案 which
解析 (该空所在小句为非限制性定语从句，修饰tusks，指“野猪的大獠牙被其作为武器和工具”，因此此处应当填which来指代tusks。)
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