4 . Some of these non-native fish escaped into other waterways. They can bully ecosystems, quickly ________.

A．switching off

B．taking over

C．bouncing around

D．turning up

5 . 然而，还需要过些年大多数新住宅才会开始使用这种新技术。 (before状语从句)(汉译英)

6 . 根据语境，选择下框中的单词或短语，必要时用正确的形式填空。框中有两个为多余的单词或短语。

break down   in other words   bless     employ     in this sense     appeal to        vary     accompany     by comparison       entertain

1. I failed the exam because I didn’t study enough; ________________, my lack of preparation led to poor results.
2. Since the tools ________________ by the human, our civilization has witnessed a rapid development.
3. There is also a nursery to help care for babies, and children can play with toys and read books while ________________by family members in a waiting room.
4. Sometimes part of what makes an animal cute is what makes them dangerous, ________________commercial trades especially fur industry.
5. The amount of time it takes to complete the project ________________ from person to person.
6. The homeless man was grateful to ________________ with a hot meal on a cold night.
7. The street performer’s magic tricks and skills were highly ________________ to watch.
8. The organization’s efforts in promoting diversity are focused on ________________ barriers and creating equal opportunities for all individuals.

9 . 它们都精美绝伦，品质非凡。
They are ________ ________ ________ and quality.

10 . 根据语境，选择下框中的单词或短语，必要时用正确的形式填空。框中有两个为多余的单词或短语。

stuck          convenient          award          defence          as well as          absorbed keep one’s eyes open          keep track of          go through          benefit

1. How does she keep smiling after all she has ________________?
2. They help the body ________________ itself against some kinds of infections.
3. It can be ________________ to share your feelings with someone you trust.
4. Last winter, a number of overseas students remained ________________ abroad due to COVID-19.
5. ________________ all the new discoveries in genetics is difficult for many scientists.
6. Judy lay on the sofa, ________________ in her book.
7. Einstein was ________________ the Nobel Prize for his work in quantum physics.
8. Many senior citizens started to use smart phones to enjoy the ________________ of digital payment nowadays.