2. As we all know,great scientific achievements are the results of years of trying to create something before (exist)
正如我们所知道的，伟大的科学成就缘于多年努力去创造某些以前不存在的东西。
2. that has never existed定语从句中的谓语动词的单复数须与that所修饰的名词或代词一致。此句先行词是something
题目来源：高考英语组合训练多项选择+完成句子 > 组合训练13-14
科目：高中英语 来源： 题型：
6. ―You were out when I dropped in at your house.
―Oh,I at the airport (wait)
——我去拜访你时你不在家。
——噢，我那时正在机场等一个朋友。
查看答案和解析>>
科目：高中英语 来源： 题型：
10. her violin,the girl began to help her mother to set up a blog on the Internet. (finish)
练完了小提琴，这个女孩开始帮她妈妈建立博客。
查看答案和解析>>
科目：高中英语 来源： 题型：
7. For thousands of years,many popular poems were written the Yellow Crane Tower,thus making the Tower so renowned that it becomes a combination of wine culture and tourism.
A. in terms of B. in praise of
C. as the result of D. in response to
查看答案和解析>>
科目：高中英语 来源： 题型：
7. When he was a baby he was taken abroad by his parents and the letter says it will be five weeks from England. (return)
他还是一个小宝贝的时候就被父母带到外国去了，信中说还有五周他才从英国回来。
查看答案和解析>>
科目：高中英语 来源： 题型：
4. The earthquake that burst in Sichuang is said to have more than 190 victims.
A. claimed B. taken C. confirmed D. got
查看答案和解析>>
科目：高中英语 来源： 题型：
6. The person who had wanted to commit suicide refused to come out,so the police had no choice but to rescue him. (break)
要自杀的那个人拒绝出来，所以警察只能破门而入去救他。
查看答案和解析>>
湖北省互联网违法和不良信息举报平台 | 网上有害信息举报专区 | 电信诈骗举报专区 | 涉历史虚无主义有害信息举报专区 | 涉企侵权举报专区
违法和不良信息举报电话：027-86699610 举报邮箱：58377363@163.com