In your dreams, you may clearly see something or hear someone talking. But what about smells? Can you ever remember smells from your dreams?

A study published in 1896 looked at different sensory (感官的) experiences in dreams. It found visual (视觉的) experience ______ controls one’s dreams. It takes up about 85%, while auditory (听觉的) makes up 69%, and smell only 7%.

But why? Now scientists have possible reasons based on what is known about the brain.

In our brain, there is a special part called the cerebral cortex (大脑皮层). It is linked to our feelings. As much as two-thirds of the cerebral cortex works in vision (视力). So vision

______ often in dreams. Auditory is closely tied to language, and language is processed entirely in the cerebral cortex. Smell, ______, has little to do with the cerebral cortex. It connects directly into the memory and emotional systems. That’s why a smell can bring back a memory.

Another ______ is that perhaps smell is not easily affected (影响) by our imagination. For example, close your eyes and imagine your favorite dish. What do you get? It is easy to think about what it looks like. But it is not as easy to imagine its smell.

Vision and auditory is a complex (复杂的) process inside the brain. But smell is a direct measurement (衡量) of the chemicals in the air. There is ______ imagination involved in smell. Therefore, smell might not be much affected by the brain activity during dreaming.

It is ______ to taste and touch. That is why you don’t often have the experience of taste and touch in your dreams.

1.A.hardly B.firstly C.mainly D.completely

2.A.fails B.appears C.changes D.enters

3.A.of course B.for the first time C.after all D.on the other hand

4.A.possibility B.advantage C.fact D.challenge

5.A.better B.less C.more D.worse

6.A.kind B.used C.thankful D.similar

Many children like to go hiking (徒步旅行). Why? Because they can be free from school and their homework. They can also see beautiful views (风景), play with friends or family and so on. If you want to go for a hike, how can you have a happy one?

First, the weather must be fine. Fine weather is the most important for a happy hike. If the weather is fine, you can do a lot of things, like going bike riding and swimming in the river.

Second, go with the people you like. If you go hiking with the people you don’t like, you won’t have a great time.

Third, find the right place. Different people have different ideas about the places. For me, I would like to go for a hike at the seaside(海边).

Lastly, prepare well before going hiking. To have a nice hike, you must have comfortable shoes, enough (足够的) water and some food.

1.Why do children like going hiking?

A.Because they can make more friends.

B.Because they can learn more things.

C.Because they don’t need to stay at home.

D.Because they can get away from school work.

2.The underlined(划线的) word “comfortable” means __________.

A.时尚的 B.舒适的 C.干净的 D.暖和的

3.Which is NOT the writer’s idea about having a happy hike?

A.All of us think the seaside is the best place to go hiking.

B.The weather is the most important for a happy hike.

C.A pair of sports shoes can help you have a nice hike.

D.You can go hiking with your best friend if you want a happy hike.

4.The best title(标题)for this passage is __________.

A.who you should go hiking with B.where to go hiking

C.why you should go hiking D.how to have a happy hike

5.The right structure(结构) of the passage is __________.(① = Paragraph(段落)1)

A. B. C. D.

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