1. There is no doubt that gardens evidence an irrepressible urge to create, express, fashion, and beautify and that self-expression is a basic human urge； yet when one looks at the photographs of the gardens created by the homeless, it strikes one that, for all their diversity of styles, these gardens speak of various other fundamental urges, beyond that of decoration and creative expression.
2. The plain truth is that people are most often self-centered.
3. It should come as no surprise to learn that many abused children become abusers later in life.
4. According to a recent survey, four million people die each year from diseases linked to smoking.
5. The latest surveys show that quite a few children have unpleasant associations with homework.
6. No invention has received more praise and abuse than Internet.
7. It is not the strongest of the species that survives, nor the most intelligent, but the one most responsive to change. - Charles Darwin
8. The only constant in life is change. - Heraclitus
9. Success is not final, failure is not fatal: it is the courage to continue that counts. - Winston Churchill
10. The secret of getting ahead is getting started. - Mark Twain
11. The pessimist sees difficulty in every opportunity. The optimist sees opportunity in every difficulty. - Winston Churchill
12. It is important or essential or crucial or significant for someone to do something.
13. There is little doubt that...
14. Those who... are...
15. The reason why... is that...
16. We must keep in mind that...
17. It enables someone to do something.
18. It is no exaggeration to say that...
19. Certainly people do not seem less interested in success and its various signs than formerly.
20. At the same time, young people should be encouraged to communicate with their peers and...
这些句子涵盖了不同的主题和语境，包括人类行为、社会现象、健康问题、科技进步和成功哲学等，是考研英语中常见的表达方式。建议考生背诵这些句子，以提高语言运用的准确性和多样性。