12-13学年度S1第40期7版测试答案与解析
D1 1. vocabulary 2. extra 3. partner 4. Picking/Choosing/Selecting 5. realized 6. proper 7. halfway 8. holes 9. long 10. result
D2 ADCC
D3 CABB
D4 DCCB
D5 AAC
D2:
1. A。emphatic表示“断然的”，从下文的the Internet has become part of our lives and we have a hard time imagining life without it可推测词义，要人们整整12个月不接触网络不太可能。
2. D。细节题，从in hopes of finding out more about himself and focusing on other activities可得出答案。
3. C。从Instead of reading and writing, he started playing video games for hours on his couch可判断C正确，A错误。B文中没有提到，从He missed some of his Facebook and long-distance friends as well可判断D错误。
4. C。从全文内容和The Internet is where people are可判断C正确。
D3
1. C。本文主要是介绍了一种坚韧性和牢固性都很好的新材料nanofibers的特性以及其应用范围，故选C。
2. A。第三段作者给出了toughness and strength的定义，第四段进一步以瓷盘与橡皮球为例说明这两种属性的特点，故选A。
3. B。由第五段第二句可知B正确。由第六段最后一句话“Think of it like this: a sheet of paper is one hundred thousand nanometers thick, and so is your hair.”可知A不对。C文中没有提及；由第七段可知需要特别的显微镜才能看到纳米纤维，故D不对。
4. B。由倒数第二段可推知B正确。由倒数第二段的“But with the new nanofiber materials, not only planes, but also bridges, bikes and bullet-proof vests can all be made lighter, stronger and tougher.”可知A项的are stronger不对；C文中都没有提及。最后一段提到“Whatever is made of composites can benefit from our nanofibers”与D项所述为两码事，故D不对。
D4:
1. D。从文章开头we miss what is really important以及后文Plumb couldn't sleep that night, thinking about that man. He wondered how many times he might have seen the man and not even said good morning可得出D正确。
2. C。事实细节题。
3. C。下一句话Everyone has someone who provides what they need to make it through the day.说明了正确答案为C。
4. B。文章最后提到了核心句，please recognize the people who have packed your parachute and helped you to get where you are today，应该对那些帮助过你的人心存感激。
