1 . Athletes competed courageously to e ________________ limits, setting a number of new world records and Olympic records. (根据首字母单词拼写)

2 . In r______ to the phenomenon of online game addiction, some people think it is urgent to explore effective measures to develop their self-discipline. (根据首字母单词拼写)

3 . Since late 2019, the number of visitors from the mainland has dropped so significantly that Hong Kong’s tourism, catering, hotels and other related industries have been left hanging in the balance, or in a bitter fight for ______ (幸存). (根据汉语提示单词拼写)

4 . Some kinds of b______ (电池) can be recharged by connecting them to a source of direct current. (根据中英文提示填空)

5 . Teachers live by selling knowledge, philosophers by selling ______(智慧) and priests by selling spiritual comfort. (根据汉语提示单词拼写)

6 . 词性转换
1. vital            (adj.)          ___________ (v.)
2. urgently       (adv.)          ___________ (adj.)
3. security        (n.)            ___________ (v.)
4. pollution       (n.)            ___________ (v.)
5. concern        (v.)            ___________ (adj.)
6. accumulation (n.)            ___________ (v.)
7. governance   (n.)            ___________ (v.)
8. regulation     (n.)            ___________ (v.)
9. opposition     (n.)            ___________ (v.)
10. benefit          (n.)     __________ (adj.)

7 . I hope you will stop advertising your product in such a way that may h___________________ (伤害) our children. (根据中英文提示拼写单词)

8 . Fortunately, a book about Helen Keller totally changed him before d___________________(绝望) came. (根据中英文提示拼写单词)

9 . Tom is now an a_____ (成年人) and has relived her birth experience under hypnosis (催眠). (根据中英文提示填空)

10 . Dong Yuhui often shares his opinions about poetry or philosophy during his livestream, which ________(区分) him from other online streamers. (根据汉语提示单词拼写)