The research is so designed that once _____ nothing can be done to change it.
A．beginsB．having begunC．beginningD．begun
D
答案選D，可視為once it is begun之省略。
【標簽】省略
練習冊系列答案
相關習題

科目：高中英語 來源：不詳 題型：單選題

Little ____that we were watching his every move, so he seemed to be going his own way in this business.
A．he realizedB．he didn’t realizeC．didn’t realizeD．did he realize

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

2005重慶, 27） __________, he talks a lot about his favorite singers after class.
A．A quiet student as he may beB．Quiet student as he may be
C．Be a quiet student as he mayD．Quiet as he may be a student

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

—Why do you want the book so much?
　　—_______, sir.
A．StudyingB．StudiesC．StudiedD．To study

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題


---Will you two go to the show tomorrow?
---No. We're going to a lecture, or at least I'm planning ____.
A．it B．toC．that D．so

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

____I admire David as a poet, I do not like him as a man.
A．Much as B．Only ifC．If onlyD．a(chǎn)s much

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

— ______do you like the film tonight?
—Better than       .
A．How; expectedB．What; expected
C．How; to expectD．What; to expected

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

Was it from Libya ______ wars suddenly broke out _____ we managed to rescue the Chinese working staff?
A．that; whereB．which; thatC．where; thatD．where; which

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題

--Excuse me ,could you tell me where the post office is ?
---Ok.Between the two white buildings ___ the post office.
A．a(chǎn)re lyingB．lieC．liesD．lay

查看答案和解析>>

同步練習冊答案