首页
登录
职称英语
Naturally, in a group of animals as diverse as the snakes, and with so many
Naturally, in a group of animals as diverse as the snakes, and with so many
游客
2025-04-06
18
管理
问题
Naturally, in a group of animals as diverse as the snakes, and with so many varied enemies, there are numerous defensive reactions and devices. There is, however, one general pattern of behavior. In the presence of suspected enemy the first reaction is to try to escape observation; if this fails, the next resort is the flight to some inaccessible retreat, but if this is not possible, or is circumvented, various kinds of intimidatory gestures and warning devices are brought into play; in the last resort the snake attacks. This pattern varies with the circumstances; some stages may be omitted or combined unpredictably whilst; some notoriously irascible species may dispense with all the preliminaries and attack almost at once, though seldom or never without some provocation.
Amongst the factors that increase aggressiveness are hunger, the mating season and surprise, with the last mentioned the commonest; when hunting for food or for mate, activity and the aggressive instinct are both at their peak. Owing to their poor sense of hearing snakes are very liable to be, quite literally, caught napping and a similar situation arises during their periods of temporary blindness just before sloughing(蜕皮)begins. By far the greatest number of snake-bit accidents result from the unwitting disturbance of resting snakes, and this hazard is much increased with species that are well disguised and whose natural instinct is to trust to this concealment as their principal defense. As well as differences in aggressiveness between individuals of the same species according to the circumstances and conditions, there are also notable differences between species, even closely allied species; and the reports of those who have been attacked may understandably be lacking in objectivity. So it is impossible to forecast, even in outline, how any encounter will develop.
The Hamadryad, for example, is usually credited with being amongst the most aggressive of snakes, and there are many accounts of unprovoked attacks, yet on one occasion fourteen men and seven dogs passed and returned within two yards from a nest and no snake was seen although the female, which guards the nest, could not have been far away. [br] When a snake meets a potential enemy, its primary device is______.
选项
A、avoiding any observation
B、finding a safe shelter
C、giving a warning threat
D、starting a quick attack
答案
A
解析
细节事实题。根据题干关键词the primary device与原文首段第三句中的its first reaction对应,据此定位原文。第三句按反应顺序列举了四种蛇对外界反应的行为模式,第三句中的try to escapeobservation与选项A对应。故答案为A。
转载请注明原文地址:https://tihaiku.com/zcyy/4029307.html
相关试题推荐
Anupsurgeofnewresearchsuggestsanimalshaveamuchhigherlevelofbrai
Bycuttingdowntreeswe______thenaturalhomeofbirdsandanimals.A、harmB、hur
Largeanimalsthatinhabitthedeserthaveevolvedanumberofadaptationsf
Largeanimalsthatinhabitthedeserthaveevolvedanumberofadaptationsf
Largeanimalsthatinhabitthedeserthaveevolvedanumberofadaptationsf
Largeanimalsthatinhabitthedeserthaveevolvedanumberofadaptationsf
Largeanimalsthatinhabitthedeserthaveevolvedanumberofadaptationsf
Largeanimalsthatinhabitthedeserthaveevolvedanumberofadaptationsf
Largeanimalsthatinhabitthedeserthaveevolvedanumberofadaptationsf
Largeanimalsthatinhabitthedeserthaveevolvedanumberofadaptationsf
随机试题
Ausefuldefinitionofanairpollutantisacompoundaddeddirectlyorindi
[originaltext]Socialchangestogetherwithreorientationofsocialvaluesan
下列关于上市公司财务信息更正的说法,正确的有( )。 Ⅰ.上市公司因前期已公
“无阳则阴无以生,无阴则阳无以化”指的阴阳关系是A.互根互用 B.交感互藏
药物透皮吸收是指A.药物通过破损的皮肤,进入体内的过程 B.药物通过表皮,被毛
蛋白质是维持人体生命活动所必需的营养物质。下列关于蛋白质说法错误的是()
A. B. C. D.
属于配伍禁忌的配伍关系是( ) A.相反、相须 B.相畏、相杀 C.相恶
男性,56岁,30分钟前心前区压榨样痛,突然出现意识丧失、抽搐,听诊心音消失,脉
某客户在7月2日买入上海期货交易所铝9月期货合约一手,价格为15050元/吨,该
最新回复
(
0
)