1 . Amur tigers, also known as Siberian tigers, are interesting animals. They are the biggest cats in the world. A full-grown Amur tiger can weigh over 600 pounds. Unlike lions that live in groups, tigers are solitary animals. Tigers also have very good eyesight and hearing. Its eyesight is six times better than a human’s.

Amur tigers live in the forests located in the Russian Far East and northeastern China. They have a thick yellow fur coat with black stripes(条纹). Their stripes are like human fingerprints. Every tiger has a different and unique stripe pattern. Tigers use their striped coat to hide themselves from the animals they hunt. Their thick fur and a thick layer of fat keep them warm during the long, cold winters in the forest.

As powerful and quiet hunters, Amur tigers usually hunt at night. Sometimes these tigers travel hundreds of miles looking for food. They hunt deer and wild boar(野猪) that live in the forest. They also hunt smaller types of bears. A hungry Amur tiger can eat more than 50 pounds in one night.

Today, Amur tigers are an endangered species. People illegally hunt Amur tigers. Amur tigers are also still in danger because the forests they live in are being destroyed. Illegal logging(砍伐) and new roads destroy their forest homes. It makes it hard for the tigers to find food. It also makes it difficult for the tigers to travel for long distances. They almost disappeared forever at the beginning of the 20th century—They were hunted until only 40 tigers remained in the wild.

Countries like Russia then began to protect these big cats. They made it illegal to hunt them and tried to protect their forest habitat. After these changes, the number of Amur tigers living in the wild increased. Scientists believe there are about 540 Amur tigers living in the wild today.

3 . A mobile(移动的)hospital for treating injured wildlife has just begun a journey to its new base in Byron Bay, on Australia's east coast.

Byron Bay Wildlife Hospital founder and Professor Stephen Van Mil said that Australia's annual disastrous(灾难性的)wildfire season could _______ the animals’variety. Seeing the _______ koalas sitting in baskets waiting for care was _______ .

By now, several charities, and help from animal protection groups have turned the mobile hospital into a _______ .

It is housed in a 16-meter _______ that was partially helped by the World Wildlife Fund, which was _______ by a group of international environmentalists to raise money _______ global efforts. Inside, the truck comes with all the _______ an animal hospital needs, including X-ray machines, ultrasound(超声)facilities, and special cages. To make sure that the mobile hospital can help even in the most _______ conditions, it is 100 per cent self-sufficient(自给自足). It uses solar energy to produce electricity and has its own water collection and management systems so that it can arrive anywhere and be set up and ready to go in ________ .

“Being able to work in a mobile hospital ________ that I can actually help these animals quickly. I can get there and I can concentrate on the ________ that they need," said wildlife specialist Dr. Bree Talbot, who will be aboard the mobile hospital along with a small team of volunteers.

Australia can be a ________ place to live for wild animals. Experts determined that up to a billion wild creatures were ________ by the 2020 wildfires alone. Offering help to these animals in times of crisis is a major challenge, and this amazing mobile hospital seems to have arrived at the ________ time.