If you have ever watched a movie that featured old Beijing，there is a good     1    (possible)that it contained a scene with a flock of pigeons flying over quadrangular dwellings (Siheyuan)，    2    ( give) off a uniquely harmonic(和声的)buzzing sound as they flew by．That sound is     3     local residents remember when they think of old Beijing．Every city has     4    ( it)unique sights and sounds， and the "sound of old Beijing" is the pigeon whistle．

Pigeon whistles (also called pigeon bells) are whistles that     5    ( tie) on the tails of pigeons so that when they fly， the air that flows through the whistle creates a harmonic sound．Over     6     last several centuries， Beijing residents have liked to raise pigeons and let them soar through the sky every day． Regardless     7     whether it is a windy morning in spring     8     a cloudless day in late autumn， people can always see a flock of pigeons flying around in the sky and hear the beautiful sound they make while flying． Up until the 1950s， pigeon markets in Beijing were very     9    (promise)．

But with the passing of time and advancement of urban development， fewer and fewer people in Beijing are raising pigeons．    10    ( consequent)， the sight of pigeons flying around with their accompanying harmonic sound is becoming increasingly rare．

A farm in England has started to conduct cow yoga (瑜伽) classes to help improve fitness,     1     might seem strange to you.

The class,     2     (hold) on the farm, gives people a chance to enjoy exercising     3     (outdoor) with cows. Animals     4     (think) to be able to help lower the level of stress.

The cows live at Paradise Farm in Lancashire. They also get special     5     (treat). When they’re not helping during a yoga class, the cows are kept entertained with music by     6     (artist) from Mozart to Madonna. The cows even get to rest on individual mattresses (床垫).

    7     recent study showed that UK adults spent 40% of their hours awake     8     (watch) television. Furthermore, the amount of physical activity people took part     9     between March and June during the pandemic dropped by over a quarter.

Azhar Zoug, managing director at Lancashire Farm Dairies, said, “Yoga is the perfect activity to get the public moving.     10     (good) of all, it’s a great way to enjoy the countryside and walk with these wonderful animals.”