A video for the track that has been “scientifically proven” to be the most relaxing song in the world has been released as part of an album with five other songs.

Named Weightless, the music can apparently slow the heart rate, reduce blood pressure and decrease levels of cortisol（皮质醇） released in response to stress. 

The eight-minute long track was made by Manchester-based Marconi Union in cooperation with the British Academy of Sound Therapy. It was claimed to be the most relaxing song ever after a scientific study by the Mindlab Institution in 2011. Since then the band has expanded upon the original song, releasing a video for it and recording five others. 

The director of the video Ritchie Johnston said he used a drone（无人飞机）because its “grace in the air and precise flight capabilities made it the ideal subject for the shoot.” He said, “Orchestrating（把...编成管弦乐器）the routine together proved challenging as I was using a technique that displayed patterns which I was unable to fully comprehend until the project was finally finished.”

In 2011 scientists played the song to 40 women and found it to be more effective at helping them relax than songs by Enya, Mozart and Coldpla. The women were connected to sensors and given challenging puzzles to complete against the clock in order to bring on a level of stress. They were then played different songs as their heart rate, blood pressure, breathing and brain activity were recorded.

Studies found Weightless was 11 per cent more relaxing than any other song and even made many of the women “drowsy” in the lab. It led to a 65 per cent reduction in overall anxiety and brought them to a level 35 per cent lower than their usual resting rates.

The ambient（溶歌入境）song features guitar, piano and electronic samples of natural sound escapes. 

Lyz Cooper, founder of the British Academy of Sound Therapy, said Marconi Union had used scientific theory to make the “perfect relaxing song.”

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1.What do people benefit from the song Weightless?

A They can lose weight by listening to the song.

B They will feel relaxed when listening to the song.

C They can do challenging puzzles better with the music played.

D They can be more effective at work by listening to the song.

解析：选B。B 细节理解题。根据文章第二段…slow the heart rate, reduce blood pressure and decrease levels of…可知，歌曲《失重》能够让人觉得心率降低，血压下降，皮质醇下降，让人觉得非常放松。

2.Why did Ritchie Johnston use a drone in making the video?

A He wanted to make the video perfect.

B He wanted to understand the technique.

C The drone could help him orchestrate easily.

D The drone flew with high accuracy.

解析：选A。A 细节理解题。根据文章第四段…made it the ideal subject for the shoot可知，在录制《失重》这首歌的视频时，使用了无人机，是为了制作理想的视频，故选A。

3.Why were the women given challenging puzzles?

A The puzzles could test the women’s brain activity.

B The puzzles were effective at helping the women relax.

C The puzzles affected their heart rate and blood pressure.

D The puzzles could bring them the expected level of stress.

解析：选D。D 细节理解题。根据文章第五段…and given challenging puzzles to complete against the clock in order to bring on a level of stress可知，做这些难题的目的是为了诱发压抑感。

4.What can be implied in the passage?

A Weightless has been made with grace.

B Experiments had been made before Weightless was created.

C Weightless was more relaxing than classic music.

D Weightless has been made based on scientific theory.

解析：选D。D 推理判断题。歌曲《失重》经过与安雅、莫扎特等作曲家的歌曲的效果进行对比，并结合歌曲刺激条件下的心率、血压、呼吸、皮质醇的数据可知，这首歌被评为世界上最令人放松的歌曲。根据所介入的实验及数据判断，这首歌的创作是以科学理论为基础的。

5.What can be the best title of the passage?

A Artists Used High Technology to Create Most Relaxing Song.

B Weightless Proved to Be the Most Scientific Music.

C Weightless Proved to Be the Most Relaxing Song.

D Songs Help People Relax After Stressful Work.

解析：选C。C 主旨大意题。通读全文可知，本文的主要内容为：科学实验证明，《失重》是最令人放松的歌曲，比其它歌曲的放松度高出11%，放松深度比平常低35%。