The animals 【小题1】 (keep) together in small spaces, with no privacy and little opportunity【小题2】 mental and physical exercise. This results in unusual and self-destructive behavior 【小题3】 (call) zoochosis. A worldwide study of zoos found that zoochosis is common among animals kept in small spaces or cages. Another study showed that elephants spend 22 percent of their time making repeated head movements or biting cage bars, and bears spend 30 percent of their time 【小题4】 (walk) back and forth, a sign of unhappiness and pain.

After a lot of preparation, both Joseph Lockwood and Philippa Amos 【小题1】 (be) finally ready to start their journey into the Amazon rainforest. They were feeling 【小题2】 (cheer) as they sailed down the great river. Eventually, they got out of the boat and walked into the darkness of the jungle. Neither of them had ever been in such an extreme situation before, using just a compass (指南针) to find the place 【小题3】the kind of frog lived. Suddenly, Joseph, who was holding the compass, tripped and lost it in a river. The situation seemed hopeless—how would they find the frogs now? But just as they started to feel really sad and worried that their journey would be a failure, they saw the frogs they had come to look 【小题4】.

The ox has a significant place in Chinese culture. Centuries ago, most people earned their living through farming and the ox was used 【小题1】(help) farm and carry heavy goods. Ancient Chinese poets and writers 【小题2】(frequent) described the ox in literature. In the Classic of Poetry, the oldest existing collection of Chinese poetry, the animal 【小题3】(mention) several times.

The ox is considered a symbol of diligence and 【小题4】 (sincere). To this day, the phrase “the spirit of ox” still refers【小题5】 conquering anything that may present itself as an obstacle. The spirit is highly praised and many people follow it as their work ethic(准则). When 【小题6】 comes to someone who gains a great achievement through hard work, people often use “niu”, 【小题7】(mean) “awesome”, to describe him or her.

Oxen seldom bully the weak or fear 【小题8】 strong. They work hard and make sacrifices. This is reflected in a poem by Lu Xun: “Headbowed, like a willing ox, I serve the children.” The poem 【小题9】 (imply) that Lu Xun would serve the people heart and soul and would never give in to enemies, 【小题10】 fully expresses the poet’s loyalty to the people.