in seeking a favorable international environment for its reform and to make contributions to world peace and development. 在国际关系方面，中国将继续发展与外国的关系，寻求一个对自己改革有利的国际环境，继续对世界和平和发展作出贡献。

5. I'll keep at it—whatever the challenges might be—and never give up until I achieve success.

不管会面临什么挑战，我都会坚持，永不放弃，直到取得成功。

6. The latest research seems to imply that without the software of emotional maturity and self-knowledge, the hardware of academic training alone is worth less and less.

最新的研究似乎表明，缺乏情感成熟和自我了解这一软件，纯学术培训这一硬件越来越没有价值。 XIII.

1 ．B 2. A 3. C 4. A 5．D 6.C 7．B 8．A 9. D 10. C 11，A 12.D 13.C 14.B 15．C 16.D 17.D 18.C 19.A 20.B