When I was in college, a white cat often showed up on our campus. It was clear 【小题1】 he was a stray (流浪的) cat because he looked thin and weak. Students would play with him after class and feed him all kinds of food. The school didn’t say anything about the cat for 【小题2】 long time.

But one day, we 【小题3】 (tell) that one of our fellow students had an infectious disease and that the cat was 【小题4】 (possible) the source. After that, we were not allowed to touch any stray 【小题5】 (animal) on campus. The school started to make efforts to keep animals 【小题6】 campus as well.

Since we were not allowed to feed the white cat, it was hard for him to find food on the street. He 【小题7】 (become) weak and skinny. But while the rest of us ignored the cat, a security guard at our school decided to take on the 【小题8】 (responsible) of caring for him. He took the cat to a vet for a health check. He then went to a nearby supermarket and bought food for the cat, as well as a small bed for him to sleep in. He made sure the cat was healthy and 【小题9】 (comfort).

It might seem like a small effort to some people. 【小题10】 this man risked his job - his only source of income - just to feed a tiny cat who no one else cared for. It was a very heartwarming thing to see.

Rainforests are thick forests in the hot parts of the world. They have a great effect 【小题1】 the world environment. For example, they play 【小题2】 part in controlling the climate. Without 【小题3】 (they), climate would change a lot. What’s more, many plants are of 【小题4】 (important) in medical value.

However, in the past hundred years, humans 【小题5】 (begin) destroying rainforests to search for land and mine. The 【小题6】 (hard) we harvest from them, the more carbon dioxide is released into the air, 【小题7】 affects the climate, environment and ourselves as a whole. Meanwhile, we are losing the opportunity   【小题8】 (explore) the medical use of the plants. With the population growing 【小题9】 (rapid), we indeed have an increasing need for 【小题10】 (resource), but we will suffer more in the end if we keep on doing so.

A BBC film crew was working on the remote Lord Howe Island for a new wildlife documentary called Drowning in Plastic. They filmed many birds that 【小题1】 (die) for no clear reason. After some research, they found out the truth—【小题2】 caused the death of the birds was that their stomachs were literally too full of plastic. The documentary team also filmed biologists 【小题3】 (work) on the island to save the birds. The scientists captured hundreds of chicks and removed plastic from their stomachs to give them a chance of 【小题4】 (survive).