英语单词测试卷20270509

1.complete [kəmˈpliːt] adj. 完整的，完全的；v. 完成

2.minimum [ˈmɪnɪməm] n. 最小值；adj. 最小的，最低的

3.observe [əbˈzɜːv] v. 观察；遵守

4.formerly [ˈfɔːməli] adv. 以前，之前；原来

5.external [ɪkˈstɜːnl] adj. 外部的，外在的；表面的

6.universal [ˌjuːnɪˈvɜːsl] adj. 普遍的，通用的

7.efficiency [ɪˈfɪʃnsi] n. 效率；效能，功效

8.significant [sɪgˈnɪfɪkənt] adj. 重大的；有意义的

9.lag behind 落后

10.unprecedented [ʌnˈpresɪdentɪd] adj. 空前的，无前例的

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Please ______ the task before Friday so that we can start the next step on time.

The ______ age for joining this club is 18, so you are old enough to sign up.

Scientists ______ the behavior of the animals in the wild for many years to learn their living habits.

The small village, ______ a poor area, has now become a popular tourist attraction.

The ______ walls of the building need to be repainted this year, while the inside is still in good condition.

Smiling is a ______ language that can be understood by people from different countries.

The new machine greatly improved our work ______, and we finished the task much earlier than before.

The new policy has made a ______ difference to the development of the local economy.

If you don't study hard, you will ______ other students in your class.

The development of artificial intelligence in recent years has brought ______ changes to people's daily lives.