题目

补全单词 根据句意或所给的首字母填空。 (1) You don’t look w_________. What’s the matter? (2) Almost everybody thinks that Bill Gates is a very s__________ person. (3) It sounded __________(reason) that the earth was the center of the universe many years ago. (4) William Shakespeare was a great writer of plays and poems. Some of his most f______ plays are Hamlet and Romeo and Juliet. (5) Yuan Longping is the great Chinese s__________. He has saved many people’s lives.如图所示，这是某个内燃机的A.压缩冲程，这时内能转化为机械能B.压缩冲程，这时机械能转化为内能C.做功冲程，这时内能转化为机械能D.做功冲程，这时机械能转化为内能