英语高手帮个忙!
帮忙查一下以下几篇阅读出自哪里?（只有第一句话）
1It remains to be seen if we have a future;.
2Serving on a jury takes a great deal of time.
3Genetically engineered crops have flourished in the United States since their introduction four years ago.
4From the late eighteenth century to the late twentieth;.
5They'ren neither co-opted conservatives nor keep-it-real black nationalists.
万分感谢!
最好是出自我国的各类考试的哪份试卷？