Before the first nonstop flight made in 1949,it______necessary for all planes to land for refueling.

试卷相关题目

• 1Please tell me _____ tomorrow morning.

  A.what are you doing

  B.what you are doing

  C.what you will be doing

  D.what will you be doing

  开始考试点击查看答案
• 2Because the shop _______, all the T-shirts are sold at half price.

  A.has closed down

  B.closed down

  C.is closing down

  D.had closed down

  开始考试点击查看答案
• 3I'm very tired. I _______ on the night shift for several weeks.

  A.worked

  B.had worked

  C.have been working

  D.have worked

  开始考试点击查看答案
• 4—Did you meet the pianist at the station? —No，he__________by the time I__________there.

  A.had left;got

  B.has left;reached

  C.was leaving;got

  D.left;had got

  开始考试点击查看答案
• 5—Has William finished writing his graduation paper yet? —I don't know exactly，but he __________all day.

  A.is writing

  B.has been writing

  C.was writing

  D.wrote

  开始考试点击查看答案
• 6—How do you like the glasses? —This kind of glasses made by experienced workers________ comfortably.

  A.is worn

  B.wear

  C.wears

  D.are worn

  开始考试点击查看答案
• 7Come to me early tomorrow morning.If I _________ ,wake me up.

  A.sleep

  B.will be sleeping

  C.was still sleeping

  D.am still sleeping

  开始考试点击查看答案
• 8With the development of science,more new technology __________to the fields of IT.

  A.has introduced

  B.is being introduced

  C.is introduced

  D.was introduced

  开始考试点击查看答案
• 9After being．discovered by Dutch explorers in 1606，the eastern half of Australia_____by the British in 1770．

  A.was claimed

  B.claimed

  C.was claiming

  D.has been claimed

  开始考试点击查看答案
• 10I wonder if she______us,but I think if she______us we will be able to complete the task ahead of time.

  A.helps;helps

  B.will help;has helped

  C.helps;will help

  D.will help;helps

  开始考试点击查看答案