Earth is believed ______ by an object the size of Mars at some point in the distant past before its surface cooled.

试卷相关题目

• 1Bell is considered _____ the first phone in 1896.   

  A.inventing

  B.having invented

  C.to invent

  D.to have invented

  开始考试点击查看答案
• 2The novel gone with wind is said _____ into several language.

  A.to translate

  B.being translated

  C.having been translated

  D.to have been translated

  开始考试点击查看答案
• 3Five people were reported _____ in the accident.

  A.killing

  B.to be killed

  C.killed

  D.to have been killed

  开始考试点击查看答案
• 4The Chinese ship, Tianyu 8, was reported ______ off the east coast of Kenya in November, 2008.

  A.to be attacked

  B.to have been attacked

  C.to be attacking

  D.to have been attacking

  开始考试点击查看答案
• 5China is now the third country to conduct spacewalk, the other two _______ that are the former SovietUnion and the US.

  A.to achieve

  B.having achieved

  C.to have achieved

  D.achieving

  开始考试点击查看答案
• 6The split between humans and living apes is thought by some scholars ____ 15 to 20 million years ago.

  A.to occur

  B.occurring

  C.to have occurred

  D.having occurred

  开始考试点击查看答案
• 7I would love ______ to the party last night but I had to work extra hours to finish a report.    

  A.to go

  B.to have gone

  C.going

  D.having gone

  开始考试点击查看答案
• 8Here we found little snow, as most of it seemed ________ blown off the mountain.

  A.to have been

  B.be

  C.that it was

  D.that it had been

  开始考试点击查看答案
• 9Mr Caraway is said _____ . Who do you know has succeeded him?

  A.to have retired

  B.to be retiring

  C.to retire

  D.having retired

  开始考试点击查看答案
• 10He is said _________ his homework when the class teacher entered the classroom.

  A.to do

  B.doing

  C.to have finished

  D.to finish

  开始考试点击查看答案