______ retire are still able to receive pension that they have paid into the social security system during their working days.

试卷相关题目

• 1_______ his arms over his head, Lincoln declared he was the “big buck of the lick.”

  A.Wave

  B.Waving

  C.Waved

  D.Been waved

  开始考试点击查看答案
• 2Man uses the energy for everything from flying to the moon to ______ about it.

  A.think

  B.thought

  C.thinking

  D.will think

  开始考试点击查看答案
• 3Although baleen whale may weigh ______ twenty elephants, it feeds on sea plants and animals.

  A.so much to

  B.as much to

  C.so much as

  D.as much as

  开始考试点击查看答案
• 4The oil industry of India ______ two World Wars and withstood the economic, social and political upheavals of a particularly troubled century.

  A.survived

  B.has survived

  C.was survived to

  D.has been surviving

  开始考试点击查看答案
• 5The basic rock material is referred to ______.

  A.as the matrix

  B.be the matrix

  C.by scientist to be the matrix

  D.as being the matrix

  开始考试点击查看答案
• 6The reward was not always given to everyone, nor _____ to those who deserved it most.

  A.it was not given

  B.was given

  C.it was not given nor

  D.was not it given

  开始考试点击查看答案
• 7Between 1890 and 1970 the monetary costs of supplying energy _____ more or less constant or declined.

  A.to stay

  B.was stayed

  C.stayed

  D.has stayed

  开始考试点击查看答案
• 8The water ________ Manhattan has been very important to New York.

  A.surround

  B.is surrounded

  C.surrounding

  D.surrounded

  开始考试点击查看答案
• 9The assumption _____ human cloning rests is that all genetic cells contain exact copies of the original set o9f genetic instructions.

  A.on which

  B.on that

  C.at which

  D.which

  开始考试点击查看答案
• 10For the creatures to become oil, it was necessary that they ______ between layers of rock for an enormous length of time.

  A.been imprisoned

  B.shall be imprison

  C.should be imprison

  D.will be imprisoned

  开始考试点击查看答案