The experiment has ________ the possibility of the existence of any life on that planet, but it does notmean there is no life on other planets.

试卷相关题目

• 1In the face of all these difficulties, we're not discouraged and ________ good spirits.

  A.keep up

  B.go up

  C.hold up

  D.pick up

  开始考试点击查看答案
• 2All of Kyle's studying ________, and he got a perfect score on his exam.

  A.paid for

  B.paid back

  C.paid out

  D.paid off

  开始考试点击查看答案
• 3He has ________ office several times, but has never been elected.

  A.brought about

  B.advertised in

  C.competed in

  D.stood for

  开始考试点击查看答案
• 4The couple have decided to______ buying a car until their economic condition becomes much better.

  A.hold off

  B.hold on

  C.hold up

  D.hold back

  开始考试点击查看答案
• 5She always has so many things to________when she comes back to the school after a vacation.

  A.add to

  B.contribute to

  C.attend to

  D.appeal to

  开始考试点击查看答案
• 6-You look upset. What's the matter?-I had my proposal ________ again.

  A.turned over

  B.turned on

  C.turned off

  D.turned down

  开始考试点击查看答案
• 7I think you should ________ your studies, or you will never achieve your goal of entering an ideal college.

  A.depend on

  B.concentrate on

  C.put on

  D.come on

  开始考试点击查看答案
• 8The teacher stressed again that the students should not ________ any important details while retellingthe story.

  A.bring out

  B.let out

  C.leave out

  D.make out

  开始考试点击查看答案
• 9It is widely believed that smoking______ lung cancer?

  A.contributes to

  B.turns to

  C.objectstoD.points to

  开始考试点击查看答案
• 10American Indians  _________ about five percent of the U.S. Population.

  A.fill up

  B.bring up

  C.make up

  D.set up

  开始考试点击查看答案