1 . 写出average在句子中的词性和词义
1. Scientists believe the worlds average temperature has risen by about 0.8℃ since 1990.
2. The boats remain at sea for an average of ten days at a time.
3. There was nothing special about the meal; it was average.

2 . 根据语境，选择下框中的单词替换句中划线部分的单词或短语，使之意思一致。

elegant        present        suspect        tremendous       engage        qualification          characteristic

1. In his speech, he mentioned Pearls Buck, to whose works Chinese farmers are a typical feature.
2. You must show your passport to the customs officers.
3. Actively involve yourself in voluntary work and you will see what a difference it will make to your future life.
4. Studying abroad can cost enormous amounts of money.
5. The police doubted that he had a part in the jewel robbery.
6. She has the competence for teaching English.
7. The seafood restaurant with precise French service will have extra space in its graceful dinning room because of social-distancing rules.

3 . 根据语境，选择下框中的单词替换句中划线部分的单词或短语，使之意思一致。

genius;   visible;   appropriate;   distinguish;   property;   security;   automatic

1. We all agree that he is the only suitable person for the position.
2. Ms. Meng Wanzhou said she has a feeling of being safe in homeland.
3. Talk-show actors have a talent for telling jokes in front of audience.
4. It’s difficult to recognize the difference between twins.
5. Bacteria is not a kind of living thing that can be seen.
6. More and more cars that work without needing a person to operate them appear in the market.
7. Policeman has returned the belongings to the original owner.

4 . 判断下列句子中narrow的词性及含义
1. Some narrow streets have been broadened, so there are fewer traffic jams.
2. Our school football team had a narrow victory against that team.
3. The economic gap between the north and south of the country was beginning to narrow.