题目

根据短文内容和所给的首字母，写出短文中所缺的单词，使短文完整，合乎情景。将完整的单词写在下面框内。 Is it difficult for you to get up in the morning? Are you often late f___1__ work or school? Yes? Then a scientist c__2___ Mike has a special bed for you．His bed will get you up in the morning! Here is h___3___ it works． The bed is connected to an alarm clock．F__4___，the alarm dock rings．You have a few minutes to wake up．Next，a tape recorder in the bed p___5___ soft music and then your girlfriend's beautiful voice came，“Wake up我国已自行建造了核潜艇，核潜艇可以在大洋中长期潜行而不需要补充燃料，想一想，核潜艇是利用什么作燃料的？当核潜艇中的核燃料停止反应时，核潜艇上会一片黑暗，请你据此现象从“能量转化”的角度设想一下核潜艇中所用的电能是怎样得来的？