With summer quickly coming，it's the time when people would like to change their clothes for the new season.But how about adding something high-tech to the summer looks？Let's look at how technology is changing the clothes people wear.
   A Chinese research team has developed a new technology to make clothes which can change the wearers' temperatures.The team puts a special material inside the clothes.It can be changed between a crystal （晶體） and a non-crystal form depending on the environment.It absorbs （吸收） heat in its crystal form while it lets heat go in its non-crystal form so that it changes the wearer's temperature.As the clothes are soft，wearers will not feel uncomfortable at all.Zhang Yongyi，a part of the team who studies at the Chinese Academy of Sciences in Suzhou，said， "It is the first time that the material has been used in such clothing，so its price is high."
   In August 2021 scientists in South Korea developed a wearable material that produces electricity as it moves.Wearers only need to move naturally to power small electronic devices （ 電 子 設(shè) 備 ）.Although there are many kinds of nanogenerators （ 納米發(fā)電機） that can create energy in the clothing，they feel complete normal.Sang-Woo Kim，who works at the Sungkyunkwan University，South Korea，is proud of his team's in developing the clothing. "It feels like a common jacket"，he told Science News for Students after wearing the clothing developed.
（1）What kind of clothes has the Chinese research team created？

Clothes which can change the wearers temperatures.

Clothes which can change the wearers temperatures.

（2）Why wearers will not feel uncomfortable when they wear this kind of clothes？

Because the clothes are soft.

Because the clothes are soft.

（3）When did scientists in South Korea develop a wearable material that produces electricity？

In August 2021.

In August 2021.

（4）How to power the small electronic devices if people wear the special clothes？

By moving naturally to power small electronic devices.

By moving naturally to power small electronic devices.

（5）Is Sang-Woo Kim satisfied with his team's work？

Yes，he is.

Yes，he is.