【题目】Even if you don’t have to work, eat or sleep, you won’t be able to get through all infermation on blogs and social networks. The problem we face is that much of this information seems very interesting at first glance. Actually, much of the information is unimportant, disposable and it distracts(分心)us from more meaningful pursuits. Worse still, when we spend lots of time consuming information from our social media streams, we may find it hard to concentrate on what we’re doing and we have a tendency to forget what we have consumed anyway.

A new study from Sweden’s KTH Royal Institute of Technology has found that too much social media exposure actually reduces your ability to process information and depletes your short-term working memory.

Our working memory plays a critical role in our capacity to filter information and remember what is valuable but it is not a limitless resource. Erik Fransén, a professor in Computer Science at KTH and the leader of this new study on social media overload says this can explain why our capacity for processing information begins to fail when we attempt to stuff more information in the working memory.

In fact, when you try to process the information like speech or video, you are going to need partly the same system of working memory, so you are reducing your own working memory capacity. And when you try to store many things in your working in your working memory, you get less good at processing information.

It is the periods of downtime of your brain—preferably disconnected from the distractions of your computer or smartphone—that are needed for memory consolidation and transferring important information to your exposure to new information. Besides, you can empty your mind of thoughts quickly to relax completely, go for a short walk or spend s few minutes listening to music. This will help you improve your capacity to process information and increase your productivity.

1What can we learn abut social media overload from Paragraph 1?

A. It distracts our atention.

B. It is beneficial to us.

C. It brings us whatever we want.

D. It keeps us informed of everything.

2Why does your capacity for processing information begin fall sometimes?

A. Much of the information is unimportant.

B. You don’t make the most of your brain.

C. You’re less good at processing information.

D. Your working memory is a limited source.

3What does the underline word “downtime” in the last paragraph probably mean?

A. Support.

B. Relaxation.

C. Increase.

D. Loss.

4Which is recommended to relax your brain?

A. Listening to music for a while.

B. Thinking over things carefully.

C. Taking enough physical exercise.

D. Focusing more on the present.

【题目】Camping without a campfire is not camping at all. Late-night conversations and games around the campfire are essential for a pleasant camping experience. However, you ought to be aware of the fact that camping with a campfire is not all about fun. 1 If you are planning to set up a campfire, or if you are planning to cook during camping, you should remember some fire safety tips.

Choose a campsite which has a campfire pit(深坑). 2 If there is no fire pit, set up your own. However, you should be careful not to place the fire pit near your camping tent. When you set up a campfire, make sure that you put the campfire materials in the right order. This can help you make sure that there will be no flying debris(碎片) once you light your fire. Put the light materials first such as paper or dry leaves. 3 Finally, make sure that you place stones around the campfire pit. Never burn plastics or other poisonous materials, which will disturb your neighboring

campground guests. It will also significantly pollute the air and promote the risk of fire spreads. 4 Use it only when all the other fire-making options fail.

5 Before you leave your campsite or before you go to bed, make sure that your campfire is completely out. Leaving fire unattended runs high risks of forest fires and the like.

A. Then, put the wood.

B. Camping can give you a lot of freedom.

C. It needs a certain degree of responsibility.

D. One traditional camp activity is making the campfire.

E. This will ensure that you will be capable of controlling your campfire.

F. Once your campfire is set up, do not leave the flame unattended.

G. Do not use petrol every time you attempt to light your campfire.

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