Earth is believed ______ by an object the size of Mars at some point in the distant past before it’s surface cooled.
发布时间:2021-07-01
A.to be hit
B.to have hit
C.to have been hit
D.to hit
试卷相关题目
- 1The teacher doesn't permit ________ in class.
A.smoke
B.to smoke
C.smoking
D.to have a smoke
开始考试点击查看答案 - 2I am considering ________ him tomorrow because he is considered ________ great contributions to science cause.
A.to visit;to make
B.visiting; making
C.to visit; having made
D.visiting; to have made
开始考试点击查看答案 - 3 Mrs. Brown was much disappointed to see the washing machine she had had _______ went wrong again.
A.it
B.it repaired
C.repaired
D.to be repaired
开始考试点击查看答案 - 4________ the difficult maths problem, I have consulted Professor Russell several times.
A.Working out
B.Worked out
C.To work out
D.Work out
开始考试点击查看答案 - 5—Can those _________ at the back of the classroom hear me? ---No problem.
A.seat
B.sit
C.seated
D.sat
开始考试点击查看答案 - 6So many problems ________, he is having a difficult time.
A.settled
B.to settle
C.settling
D.are to settle
开始考试点击查看答案 - 7________ by the policy, he decided to build a new factory.
A.Being encouraged
B.Encouraging
C.Encouraged
D.Having encouraged
开始考试点击查看答案 - 8Last summer, I went back to my hometown,_________the neighbors and the houses that I used to be familiar with were gone.
A.only finding
B.only to find
C.to find
D.found
开始考试点击查看答案 - 9If _________ in, viruses can result in illness or even death.
A.breathe
B.breathing
C.breathed
D.to breathe
开始考试点击查看答案 - 10With a lot of things _________ , John will have a difficult time.
A.to deal with
B.deal with
C.dealing with
D.dealt with
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