2017年6月英语四级答案及解析第一套【完整版】

　　20.Q: What does a dog do when it sees the s of angry dogs?

　　解析：根据原文When dogs looked at expressions of angry dogs, their eyes rested more on the mouth, perhaps to interpret the threatenings. 因此，C选项. It focuses its eyes on their mouths. 选项中的focus是对原文中rest的同义替换，题目相对简单。

　　21. Q: How does a dog sense people's feelings?

　　解析：根据原文They suggest this indicates that dogs aren't sensing emotions from a single feature, but piecing together information from all facial features just as humans do. 因此B选项By taking in their facial expressions as a whole是正确选项。

　　Passage Three

　　Winter in many places is very cold. There is lots of snow around, and the ground freezes, which can make life difficult for animals. People in cold places live in warm houses and have learned to adapt. What do animals do? There are three main ways that animals survive the cold in winter: sleep, adapt or migrate. Some animals, such as bears, frogs and snakes, sleep all winter. They sleep very deeply and need little or no food. While sleeping, their body temperature drops, and their heart beat slows down. To prepare for this before winter, these animals eat extra food to become fat, which gives them the energy they need while they sleep. Other animals adapt. For example, by staying active in winter. It is often hard for them to find food. So some animals, such as mice, collect extra food before winter, and hide it. When winter comes, they return to their hiding places to eat the food. Some animals grow thicker fur, or live in tree holes or underground to stay warm. Some birds migrate by flying to a warmer place for the winter, where they can find more food. Some fly very long distances, including one kind of bird that flies from the remote north of the world, all the way to the distant south. Some birds fly in groups for safety, while others fly alone.

　　22. Q:What does the speaker say about animals in winter?

　　解析：根据题文同序原则，答案在开头部分。文章开头是一个转折型开头，整篇材料讲的是动物怎么过冬的问题。根据原文：What do animals do? There are three main ways that animals survive the cold in winter: sleep, adapt or migrate. 因此，答案D选项，They resort to different means to survive the bitter cold. 是对原文简单的同义替换，题目相对简单。

　　23. Q: What do we learn about animals that sleep through winter?

　　解析：根据原文To prepare for this before winter, these animals eat extra food to become fat, which gives them the energy they need while they sleep。因此，C选项They consume the energy stored before the long sleep是正确选项，属于对原文的同义改写，题目相对较难。

　　24. Q: How do animals like mice adapt to the severe winter?

　　解析：该问题针对文章提出三个类型之一——调整以度过严寒冬天。根据原文 It is often hard for them to find food. So some animals, such as mice, collect extra food before winter, and hide it. When winter comes, they return to their hiding places to eat the food。因此，A选项By storing enough food beforehand是正确选项，是对原文简单的同义改写，题目相对简单。

　　25. Why do some birds fly in groups when migrating, according to the speaker?

　　解析：根据原文 Some birds fly in groups for safety, while others fly alone。因此，C选项To stay safe, 是对原文简单的同义改写，题目相对简单。

　　总结：篇章的难度和材料的内容相对去年6月和12月的题而言，相对简单。较难的题只占到了3道。