On an icy day, two hunters in eastern Russia discovered an orphaned cub (幼虎). The cub hadn’t eaten in days, and was ________ enough for the hunters just to pick her up. Dr. Dale Miquelle, director of the Wildlife Conservation Society’s Russia Program, said, “A healthy tiger cub, even a three-month-old one, would give you reason to ________ before you stuck your hand too close to its teeth and claws. But this cub had no ________ left in her.”

The hunters wrapped the cub in a coat and ________ her to a local wildlife inspector, Andrey Oryol. Over the following weeks, Oryol ________ the orphaned cub back to health. But now he had a new problem: What could he do with a(n) ________ three-month-old tiger?

The cub was an Amur tiger. Only a small number of Amur tigers remained in the wild, so scientists wanted to return ________ cubs to their natural habitat. The orphaned cub was taken to a new wildlife center. The center was designed for raising wild animals without exposing (使接触) them to people. It uses hidden cameras and covered fences to keep workers out of ________. That way, the animals don’t become ________ on humans.

The cub, now named Cinderella, became the center’s first tiger. Over the next year, she grew into a big, healthy tigress. In the center, she learned to hunt. One year later, experts agreed she was ________ to return to the wild.

During the next two years, researchers watched Cinderella’s ________. Cinderella not only________, but grew healthy and strong. Then, the cameras ________ exciting news: Cinderella had become a mother! For the first time ever, a tiger that humans had ________ and returned to the wild had given birth to two cubs of her own.

Tigers are some of the most admired animals on our planet, but they are also ________. Thanks to the work of conservationists, there is new hope for these magnificent cats.

A man was spending his holiday in Africa. One day he ______ the elephants passing by on the road. To his great surprise, these large strong animals were being held only by a small rope, tied to their front leg. Clearly, they could ______ run away any moment. However, they did not.

Then he saw a trainer and asked him how that could happen that not a single elephant made an ______ to break free. The trainer explained, “When the elephants are very young, we use the ______ size rope to tie them, and at that time it is enough to hold them. Gradually they grow up, get ______, but they never try to get away, as they believe that the ______ will still hold them.”

The man was ______. These strong animals could break free any time, but they did not, because they believed that that was impossible.

Sometimes people ______ like elephants. They give up after the ______ failure. Remember that failures are part of ______. If we want to succeed, we should never give up, but try and try again, no matter how many failures we have experienced in the past.

In almost every photo from our 1986 family vacation to Washington D.C.,I am showing off the souvenir I _________ from the gift shop at the Smithsonian’s National Zoo- a cotton sweatshirt with pandas dancing on the _________. I was nine years old, and pandas were cool. Not even midsummer heat could _________me keeping that sweatshirt on throughout the _________ .

Over 30 years later I found myself among a pool of photojournalists and video crews _________ into the panda enclosure(围场). A baby panda named Bei Bei was being _________ to the world, and I was covering it for National Geographic. I asked zoo administrators if I could _________ periodically to document the first year of the panda’s life. They said yes.

Soon I was making _________ stops at the zoo to record the baby’s daily _________. I watched Bei Bei grow from a baby to a __________,energetic youth. He played with the keepers, looking around the corner from one room to the next in his version of hide-and- seek, he’d lunge(猛冲) for my camera, reminding me that he was __________ a bear.

When Bei Bei was a few months old, the zoo held an official opening day for__________ to come and see him.That morning I arrived early, making my way past the line that was __________ forming at the entrance to the enclosure. I __________ with a woman there who’d been making frequent trips to the zoo to see pandas since 1982, panda earring enthusiastically from her ears.“I’ll come every month,”she said, “It’s great to watch the baby panda __________.”