这里文章又说他有一次还在这细细的绷索上“躺下”(liedown),这当然需要“胆量”或“勇气”(courage)。18.B。从常识可知。另外其后的withtheirheartsbeatingfast也在一定的程度上暗示我们这里应填terrified。19.A。从上文可知这是一场45分钟的“表演”(show)。20.B。从上文显然可知。1995年高考英语完形填空真题详解Washoeisayoungchimpanzee(黑猩猩).Sheisno___1___chimpanzee,though.Scientistsaredoingaresearch___2___her.Theywanttoseehowcivilized(驯化)shecan___3___.Alreadyshedoesmanythingsahumanbeingcando.Forexample,shehasbeenlearninghowtoexchange___4___withpeople.Thescientistsareteachingher___5___language.Whenshewantstobepicked___6___,Washoepointsupwithonefinger.Sherubsherteethwithherfinger___7___shewantstobrushherteeth.Thisisdoneaftereverymeal.Washoehasalsobeen___8___tothinkoutandfindanswerstoproblems.Onceshewasputina___9___withfoodhangingfromtheceiling.Itwastoohighto___10___.Aftersheconsideredthe___11___,shegotatallboxtostand