Tim and Jim are best friends and they stick together like glue. Last year these two British schoolboys conducted a project designed to answer the question “What color, if any, do birds like best?”The project led to the boys______ the Young Science Award of the year after presenting their______to a group of scholars.

The boys' decision to find out whether birds have a ______ for a particular color came purely from scientific curiosity. Both of them are very ______ about nature and the power of colors in things.______ they worked as a perfect team and began a citizen science project that didn't ______ fancy equipment. In their backyards, the boys ______ five bird feeders, colored blue, green, red, yellow and transparent(透明的). They ______ changed the position of the feeders and placed a ______ for am hour each morning, afternoon, and evening across four seasons to ______ birds visiting each feeder. They collected ______ covering a total period of 400 hours.

When the experiment finished, they had recorded the birds’ ______ to the backyards added up to over 3,000. with most of the birds coming to the ______ feeders. It was a conclusive and distinct win for blue over other colors. The pair ______ the results and male a conclusion that blue is ______ to birds because of their familiarity with the sky; green and transparent ranks second and third because they ______ grass and water, while red and yellow are often u ______ of poison   in nature.

Tim and Jim said they would propose ______ their idea in some fields, such as using less popular colors of red and yellow to ______ bird strikes on planes. There seems a quite strong ______ between the color of planes and the occurrence of bird strikes.

Paws walk across my keyboard, and my cat Monty nests himself on my lap, unaware of the world beyond our garden fence. In these uncertain times of the pandemic （瘟疫），the _____ of animals is needed more than ever. To the ____ of our cats, dogs and all pets, staying at home is a（n） ____ to give them our undivided attention. ____ , they provide us with a much-needed source of joy.

Pet ownership is well known to help settle anxiety, ____ loneliness and lift moods. Even as we spend a larger amount of time in isolation, pets are still acting as ____ to building a sense of community as people share pictures of their ____ companions online in an effort to raise ____ .

As a long term cat lady, I have never ____ that a pet is a cherished member of the household. Our pets can be as ____ as our human family members in teaching us about ourselves and how to __ the world. In short, our animals' love and ____ are unique.

So the death of a pet can feel as sad as ____ of a close friend or family member. The grief（悲伤） of the __ of a pet comes an emptiness where their ____ devotion become suddenly unoccupied. And it takes time to __ from this situation. Even many ____ requesting some time off work.

James Herriot wrote, "If having a soul means being able to feel love loyalty（忠诚）and gratitude, animals are ____ than a lot of humans. "Pets are an additional member of the family, and now more than ever, they can ____ models for the kind of basic ____ that we ought to be extending to an unstable world.

Nicola White recently made an incredible discovery.

Nicola White is often_________by what she finds in the_________. This is because White is a mudlark — someone who hunts for_________items (物品) by the sides of rivers. White often uses these items to_________works of art and, in 2014, she _________her job to focus on this full time, but even she didn’t expect to_________anything that would inspire a(n)_________to the 2.5million pets that were_________during the Second World War.

On one of her regular walks by the River Thames in London, White_________a round edge poking out (露出) from behind a rock. At first she__________it was a coin. “However, when I cleaned it off, I could see the faint (模糊的) outline of some letters. I felt__________as soon as I realized there was a__________and address.” she said.

The name was Bonzo Tabner, a dog that lived in Pelton Road in Greenwich, London, during the Second World War (1939-1945). White’s survey put her in contact with__________Clare Campbell, who has written a book about animals during the __________. Campbell told White that some pets at that time were put down on the Government’s orders.__________were told that if they couldn’t send their __________to the safety of the country, it was kinder to have them put down.

To__________these animals, Campbell and White have__________money for a memorial at the Old Blue Cross Pet Cemetery in Greenwich, which was unveiled (公布) on 11 August. Commenting on the__________, White said, “This, for me, is the most exciting kind of mudlarking find, as it can bring a__________back to life from the past.”