A landing on Mars is within the _____ of current physical theory.

试卷相关题目

• 1His name is on the _______ of my tongue, but I just couldn't remember it.

  A.tip

  B.top

  C.side

  D.end

  开始考试点击查看答案
• 2The United States has become a significant musical _________around the world.

  A.effect

  B.affect

  C.infection

  D.influence

  开始考试点击查看答案
• 3We regret to inform you that the materials you ordered are out of________.

  A.work

  B.reach

  C.stock

  D.practice

  开始考试点击查看答案
• 4If by any chance someone comes to see me, ask them to have a __________.

  A.message

  B.letter

  C.sentence

  D.notice

  开始考试点击查看答案
• 5The members of the club wouldn't run a ____ entrusting（委托） the organization to an unreliable person.

  A.danger

  B.risk

  C.hazard

  D.chance

  开始考试点击查看答案
• 6The experiment turned out to be _____ , which wasn't ______ they wanted.

  A.a completely failing ; as

  B.a complete failure ; what

  C.completely failure ; that

  D.failed ; 不填

  开始考试点击查看答案
• 7Animals should not be locked in cages; they should be in their normal _____.

  A.environment

  B.position

  C.residence

  D.dwelling

  开始考试点击查看答案
• 8Professor Jordon is well known for his _____ into the habits of the common housefly.

  A.examination

  B.introduction

  C.research

  D.expression

  开始考试点击查看答案
• 9I haven't got a single ______from Aunt Mary since I last saw her.

  A.advice

  B.news

  C.message

  D.information

  开始考试点击查看答案
• 10—How much if I wan to take one? —You can take as many as you like because they are free of _____.

  A.cost

  B.charge

  C.money

  D.pay

  开始考试点击查看答案