Passage 1
By far the most common snake in Britain is the adder. In Scotland, in fact, there are no other snakes at all. The adder is also the only British snake with a poisonous bite. It can be found almost anywhere, but prefers sunny hillsides and rough open country, including high ground.
Most people regard snakebites as a fatal misfortune, but not all bites are serious, and very few are fatal. Sometimes attempts at emergency treatment turn out to be more dangerous than the bite itself, with amateurs heroically, but mistakenly, trying do-it-yourself surgery and other unnecessary measures.
All snakes have small teeth, so it follows that all snakes can bite, but only the bite of the adder presents any danger. British snakes are shy animals and are far more frightened of you than you could possibly be of them. The adder will attack only if it feels threatened, as can happen if you take it by surprise and step on it accidentally or if you try to catch it or pick it up, which it dislikes intensely. If it hears you coming, it will normally get out of the way as quickly as it can, but adders cannot move very rapidly and may attack before moving if you are very close.
The effect of a bite varies considerably. It depends upon several things, one of which is the body-weight of the person bitten. The bigger the person, the less harmful the bite is likely to be, which is why children suffer far more seriously from snake bites than adults. A healthy person will also have better resistance against the poison.
Very few people actually die from snakebites in Britain, and though these bites can make some people very ill, there are probably just as many cases of bites having little or no effect, as there are of serious illness.
Adders are most likely to be found ________.
本题考查事实细节。根据题干定位至文章第一段，其中指出“It can be found almost anywhere, but prefers sunny hillsides and rough open country, including high ground.”蝰蛇几乎随处可见，尤其是在阳光充足 的山边或者包括高地在内的荒野的乡村更容易生存。上述的这些环境都可以用uncultivated land来解释，即 未经耕耘的土地。因此选择C。
We are told that British snakes are ________.
本题考查事实细节。根据题干定位至文章第三段第二句“British snakes are shy animals and are far more frightened of you than you could possibly be of them.”这种蛇很羞怯，在面对人类时，比人类面对它更为害 怕。因此选择A。
When will the adder NOT attacking you?
本题考查事实细节。根据关键词“attack”定位至第三段第三句“The adder will attack only if it feels threatened, as can happen if you take it by surprise and step on it accidentally or if you try to catch it or pick it up”。蝰蛇只有感到威胁时才会攻击，如果你突然抓住它，不小心踩到它，或者你试图抓住或拿起它，它就 会进行攻击。其中并未提及B选项。因此选择B。
If an adder hears you coming, it will usually ________.
本题考查事实细节。根据题干定位至文章第三段最后一句“If it hears you coming, it will normally get out of the way as quickly as it can”。如果蝰蛇听到有人来，会尽快避开。因此选择D。
According to the passage, a snake bite is ________.
本题考查事实细节。根据题干定位至文章第四段中间部分“The bigger the person, … against the poison.”。这部分是在说年纪更大的人，以及更健康的人毒素更轻。相比与成年人来说，对儿童而言伤害性 更大。因此选择B。