Short clips of the “kemusan” or “subject three” dance — has become a latest Internet hit on social media platforms at home and abroad. The dance, which is     1    (universal) believed to originate from a wedding dance in South China’s Guangxi Zhuang Autonomous Region,     2    (gain) more than 8.88 billion views on short video platforms by December 10. The dance went viral quickly and has been adapted into various     3    (version) — people of all colors and from different walks of life have sprung into the interesting dance.

Why has “subject three” dance become     4     instant hit? Nowadays, young people seek to express     5     (they) in personalized and different ways. This free and easy style allows young people to release mental and physical tiredness in routine life and enjoy     6    (origin) delight and pure happiness. Even without personal participation, holding a mobile phone to shoot or watch someone do this dance is enough     7    (connect) emotionally and feel a spiritual resonance (共鸣). “Subject three” dance meets the emotional needs of young people, provides them with an outlet to express their feelings     8     reflects a pleasant sharing of beauty.

Besides, the dance belongs to no specific type and the movements are not set,     9    (leave) space for everyone to create their own style. When people enjoy and spread this crazy style, they form a circle     10     like-minded people can get together, ignore how others look at them, and have confidence in their taste.

With global events like the UN Climate Change Conference     1     (bring) sustainability (可持续性) into public focus, readers are expecting libraries to introduce more sustainable     2     (measure). They try to reduce their electricity usage and buy equipment from providers     3     are struggling to protect the environment. So far,     4     number of the libraries that have already taken steps to reduce their carbon footprint has been increasing.

Devices like monitoring tools can     5     (apply) to identify areas of a library that are frequently unoccupied. The Jean Anderson Morgan Student Center, for example, is taking advantage     6     the tools throughout its library study rooms. Up till now,     7     (significance) improvements have been made in reducing its energy usage. Bulb costs have     8     (obvious) declined, with fewer replacements needed in low occupancy areas.

Fixing automated equipment that runs on minimal electrical power is libraries’ another effort     9     (operate) more sustainably. Sophisticated self-service machines are now able to     10     (simple) the process of loaning and returning books without causing a big increase in a library’s electricity bill.