4. He got to the station early, ( ) missing his train.

2. 无( )

A. 　 Because there are only half a million elephants in Africa.

B. 　 Because the elephant population in Asia has declined .

C. 　 Because it can save over 20,000 elephants a year.

D. 　 Because lt will help preserve endangered(濒危的) elephants.

14. 无( )

A. 　 They give deep thoughts before they make choice.

B. 　 They make a balance between love and work.

C. 　 They give more importance to their love life.

D. 　 They give more importance to their work.

10. Dreaming is the easy part.Acting on the dream is harder. Recognize that a dream is a journey. On the simplest level, it takes commitment, time,desire, and courage. But rarely is something great easily realized. Dreaming is recognizing and embracing the potential for greatness and seeking it in all areas of your life. Believe in your dreams and your ability to accomplish them. Keep your dreams in front of you. I＇m here to challenge you to reach for your dream. Do not be afraid to dream. Never forget, if you can dream it,you can do it!做梦是容易的部分。实现梦想更难。认识到

18无( )

A. 　 They are able to scatter pressure more evenly.

B. 　 They collect 70 percent of the stress of air pressure.

C. 　 They have three layers of window panes at work.

D. 　 They have become the new standard in passenger aviation.

15. 无( )

A. 　Most of them prefer to study in private schools.

B. 　 Most of them are younger than other foreign students.

C. 　 Most of them attend graduate school.

D. 　 Most of them are in undergraduate programs.

5.两千多年前,亚欧大陆的人们探索并开辟了多条连接亚、欧、非洲主要文明的贸易和文化交流之路。后人将其统称为“丝绸之路”。千百年来,丝绸之路精神代代相传,推进了人类文明进程。丝绸之路精神是东西方交流与合作的象征,是世界各国共有的历史文化遗产(heritage)。

1. 随着信息时代的到来,在线图书馆比传统图书馆带来了更多便捷。然而,在线图书馆的出现和发展引发了一波分歧。从积极意义上说,在线图书馆缩短了人与书之间的距离,拥有大量传统图书馆无法获得的书籍资源。但在线图书馆并非完美无缺,长时间浏览电子书可能会形成一种不健康的生活方式,比如脱离于现实世界。此外,在线图书馆的可用性很大程度上取决于网络状态,而传统图书馆更加稳定。

6. 无( )

A. 　 Selling newspapers at her stand.

B. 　 Standing on the street corner.

C. 　 Walking on the street.

D. 　 Gardening in her front yard.

2. 无( )

A. 　Translation requests.

B. 　 Multilingual (多语言的)system.

C. 　 Neural(神经的)machine translation.

D. 　 Phrase-by-phrase system.

28. A cup of water ( ) you will feel better.

A. 　 or

B. 　 but

C. 　 so

D. 　 and