精选优质文档-倾情为你奉上第九届初中生科普英语竞赛辅导材料1 An Animal that Sees with Its Earsecholocationeku lukein n. 回声定位能力, 回声定位法eyesight asat n. 视力object bdikt n. 物体宾语从句 Scientists now know that bats see by using what we call echolocation.表语从句 Here is how it works.It is + adj. + for sb. to do sth. It is almost impossible to trick them.use their eyesight to hunt for foodcertain bats: some batsmake a soundsend out sound wavesa fraction of a sound later: in a
