今日词汇挑战：abandon（v. 放弃，遗弃）、assemble（v. 装配，集合）、benefit（n. 好处，利益）、contribute（v. 贡献，捐助）、demand（n. 需要，要求）。
每日一练：请从以下句子中选择正确的词汇填空。
1. After much thought, he _______ his job and moved to a new city.
A. abandoned
B. assembled
C. benefited
D. contributed
2. The new technology has brought a lot of _______ to our lives.
A. abandoned
B. assembled
C. benefited
D. contributed
3. Many people _______ to the charity to help those in need.
A. abandoned
B. assembled
C. benefited
D. contributed
4. There is a high _______ for teachers in our country.
A. abandoned
B. assembled
C. benefited
D. contributed
5. The team _______ all their efforts to win the championship.
A. abandoned
B. assembled
C. benefited
D. contributed
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