NEW DISCOVERIES | 科学简报
本文作者： teen
1 All-female spacewalk 首次全女性太空行走。 There will soon be a “great leap (飞跃)” for womankind in space. Two female NASA astronauts will take a spacewalk on March 29. This will be the first all-female spacewalk in history. Pilot Anne McClain, a major (少校) in the US Army, and electrical engineer Christina Koch will walk outside the International Space Station (ISS) for about seven hours. Their task is to change batteries (电池) on the ISS. 2 World’s quietest room 世界上最安静的房间。 Where is the quietest place in the world? The answer is a room at Microsoft headquarters in Washington, US. It is the quietest room in the world. Sounds made in the room were tested at -20.3 decibels, while the sound of a person breathing is about 10 decibels, according to Business Insider. The company uses the room to test audio devices (设备). For example, they used it to build noise-canceling (降噪) headphones. 3 Background music OK? 边听音乐边做事不太可取哦。 Some people say they work more effectively (有效地) while listening to music. However, UK scientists said music may not always be helpful, especially (尤其是) when you are doing a task that involves words and language. Scientists found that people who listened to music solved fewer word puzzles (字谜) than those who worked in silence. Background music can affect how people remember words. TEENS |  |
| |||||||||||||||||||||
京公网安备 11010502033664号