If you put your history notes under your pillow and sleep on them the night before an exam, will you do any better in the exam? Most of us have hoped this might help. However, knowledge can't go through the pillow into your brain. But that doesn't mean you can't learn while you are asleep.

    Scientists aren't exactly sure how it works, but they have discovered that the brain can learn things during sleeping hours.

    In one experiment, researchers gave German speakers some Dutch words to learn. Then, they divide them into three groups. The researchers played the Dutch words for people in Group 1 while they were asleep, without telling these German speakers what they were doing. The sound was low. So it didn't wake them up, and only the newly introduced words were used.

    Another group listened to the same words while they were awake. The researchers found the people in Group 1 were better able to identify and translate the words later. This was true only for the words that were played while they slept. The third group listened to words when they walked. The walkers didn't have the same success remembering the words as the sleeping group.

    The researchers later found that people had more slow wave(慢波的) brain activity all over the night. They said that more slow waves made people have a better memory for the new words.

Teachers say that the digital（数字） age has had a good influence and a not﹣so﹣good influence on American teenagers. More than 2，000 middle and high school teachers took 1 online survey. Researchers also spoke with teachers in some groups. Most teachers think the Internet and digital search tools have had a mostly positive influence on their students' research habits and skills.2 at the same time，some teachers also point out some problems in teenagers' using digital search tools. 

The Pew Internet Project did the survey with the College Board and the National Writing Project. Judy Buchanan is the director 3 the National Writing Project and a co﹣writer of the report. She says digital research tools are helping students learn more，and learn4 . "5 teachers and students really welcome these tools because they make learning 6 . And the goal is to really help students become creators of 7 meaningful，and not just users of the online information. "

But one problem the survey found is that these technologies make teenagers have short attention spans. As there is huge amount of information about different subjects on the Internet，teenagers' attention is 8 drawn away from their research. 

9 problem the survey found is that many students trust the information they find on the Internet too much. Judy Buchanan says these students have not developed the skills to judge the online information. They need to learn a lot to tell 10 the information is believable. It's something that really has to be noticed. 

One more problem the survey found is something that might not seem like a problem at all：being able to quickly find information online. Many students think "doing research" now means just 11 quick search on Google. Teachers say the result is a drop in the wish and ability of their students to work hard 12 answers. That is ，they are overly dependent on search engines and do not make enough use of printed books or research librarians. 

Many teachers also say that the Internet makes 13 easy for students to copy work 14 by others instead of using15 own abilities. 

 Over the past few years, cars have become smarter and smarter. Some of them can even drive themselves. Now, our roads have followed the steps. In the United Kingdom alone, there are around650 kilometers of" smart roads" in use. Across the world, many more are being built. Some new technologies are being put to use.

▲ Roads that recharge(给……充电)

 Global warming has forced us to search for new energy sources. Why not look to the roads? Piezoelectric roads, a new kind of smart road, use vibrations(震动) from passing cars to produce electricity. In fact, Piezoelectricity was invented in 

1880. However, it has never been widely used before now. The U. K.'s Lancaster University is going to improve it.

▲ Built- in brain

 Roads of the future may be able to know how many people are on them, send drivers updates(最新的情况) on weather and traffic jams, and recharge electric cars while driving.

 This seems impossible, but one American company has almost made it come true. By sensing the weight of a car, the smart roads can track the speed of each wheel. The smart roads are like large touchpads(触摸屏) so that they can collect data(数据) by looking for wheels. And then the roads will send it to the drivers.

▲ Roads that never freeze

 It can be dangerous to drive in snowy weather. A tech company in Israel has developed the Snowless roads. When they find snow or ice on their surfaces, the roads will heat themselves up, melting(使融化) them away. The company has succeeded in testing this project on a few Canadian roads and in some of its car parks.

Colours can affect（影响）our feelings（感受），so knowing something about colours can help us find the right colours in our rooms.

It is easy to see red in Chinese rooms. It means happiness（幸福）. But if your bedroom is red, you may not sleep well. It's an active colour and makes us want to play sport.

Orange is a good choice（选择）for a dining room. People like having dinner and talking together in an orange room.

If you are a student，ask your parents to paint your study（书房）yellow. Yellow can help you think fast. You may be more confident（更自信的）.

You probably don't know that many of the walls of the rooms in the hospitals are blue. Why？Because blue can make sick（生病的）people feel quiet. They can have a good rest and become well soon. So use it    in your bedroom and you can have a good sleep.

注意：1. 短文需要包含上表中的所有要点，可适当发挥；

2. 文中不得出现与你身份相关的真实信息；

3. 词数：80~100。