问题 选择题
2002年诺贝尔物理学奖中的一项,是奖励美国科学家贾科尼和日本科学家小柴晶俊发现了宇宙X射线源.X射线是一种高频电磁波,若X射线在真空中的波长为λ,以h表示普朗克常量,c表示真空的光速,以E和m分别表示X射线每个光子的能量和质量,则(  )

A.E=,m=0

B.E=,m=

C.E=,m=0

D.E=,m=

答案

答案:D

完形填空
John and Bobby joined a wholesale company together just after graduation from college the same year.Both worked very ____.After several years, however,the boss ____ Bobby to the position of manager but John remained a(n) ____ employee.John could not take it anymore,handed in his resignation to the boss and ____ the boss did not value hard­working staff,but only promoted those who flattered (奉承) him.
The boss knew that John worked very hard for the years. He ____ for a moment and said, “Thank you for your criticism (批评),but I have a(n) ____.I hope you will do one more thing for our company ____ you leave. Perhaps you will change your mind and take back your resignation.”
John ____.The boss asked him to find out anyone selling watermelon in the ____.John went and returned soon saying he had found out a man selling watermelon.The boss then asked how much per kg and John just ___ his head. He went back to the market and returned,telling the boss $ 1.2 per kg.
The boss told John to wait a second,and he called Bobby to come to his office.He asked Bobby to do the ____ thing as he had told John to.Bobby went,returned and said,“Boss,only one person selling watermelon,$1.2 per kg, $ 10 ____ 10 kg.He has 340 melons in ____.On the table 58 melons,each weighs about 2 kg,____ from the South two days ago.They are fresh,red,and of good quality.”
John was very ___ and realized the difference between himself and Bobby.He decided not to ____ but to learn from Bobby.
My dear friends,a more successful person is better at ___,thinks more and explores in depth.____ exist in the daily details.For the same matter,a more successful person sees more and ____ so that he can find out an opportunity and catch it to realize his ____.If a person sees one year ahead while you see only tomorrow,the difference between the two is 365 times.How could you win?
小题1:
A.badly  B.hard C.lazily  D.happily
小题2:
A.promoted B.praisedC.encouragedD.supported
小题3:
A.special B.uniqueC.devoted D.ordinary
小题4:
A.charged B.provedC.complainedD.convinced
小题5:
A.thought B.apologizedC.explained D.whispered
小题6:
A.invitationB.orderC.request D.promise
小题7:
A.since B.beforeC.after D.unless
小题8:
A.refused B.doubtedC.agreed D.insisted
小题9:
A.marketB.officeC.district D.building
小题10:
A.nodded B.turnedC.waved D.shook
小题11:
A.otherB.sameC.different D.little
小题12:
A.by B.to C.with D.for
小题13:
A.storeB.placeC.controlD.shape
小题14:
A.discovered B.grownC.bought D.produced
小题15:
A.confused B.disappointedC.excited D.impressed
小题16:
A.resign B.compareC.envy D.suspect
小题17:
A.expressing B.bargainingC.managing D.observing
小题18:
A.Desires B.ExperienceC.Chances D.Harvests
小题19:
A.farther B.nearerC.higher D.lower
小题20:
A.success B.aimC.position D.wisdom
选择题