一．词汇(每空2分，共40分) 1.The invention of the computer is a great ___________ (achieve) . 2.What are you a_________ about? 3.She works hard for the _________(福利) of the poor. 4.He was on his best _________ (behave) . 5.The teacher i___________ us to study hard. 6.I saw him sitting in the _______of the tree. 7.It proves ____________(值得的) to do the job. 8.The police have been _____________(observe) his movements these days. 9.As a teacher, he is __________(respect) for his good teaching. 10.O______ you begin to read it, you will like it. 11.They are doing some r__________ on the effects of cigarette smoking. 12.It is important to stay calm in an ________________(紧急状况). 13.Common interests form a b_________ between us. 14.You can r_______ to the dictionary when you come across a new word. 15.She d_________ twins last night. 16.His pulse ________(速率) dropped rapidly. 17.She always shows her __________(仁慈) to children. 18.Her _______________(孩童时代) had been very happy. 19.There is a g_________________ gap between our parents and us. 20.He was _______________(体贴) of everyone.