wear out 用坏，(使)磨损

　　wear sb. out 使某人极度疲乏

　　wear off 渐渐减少；消逝

　　wear away 变薄；磨光；虚度；(时光等)流逝

　　①The effects of the drug began to wear off.

　　药效开始逐渐消退了。

　　②Apart from tears, only time could wear everything away.除了眼泪，只有时间可以消磨一切。

　　③If you climb a lot，your shoes will wear easily.

　　如果你经常爬，鞋就会很容易磨破。

　　【答案】　③out

　　Ⅰ.语境填词

　　1． have made a breakthrough in computer ．(science)

　　2．The library has a map archive that many find very interesting.(history)

　　3．It is still a to me.There are footprints in the mud.(mystery)

　　4．The who have sharp senses the difference.(detect)

　　5．Let us consider a system attached to the aircraft to above.(refer)

　　【答案】　1.Scientists；science　2.historical；historians　3.mystery；mysterious　4.detectives；detected　5.reference；referred

　　Ⅱ.选词填空 【导学号：98280002】

　　be famous for；as for；appeal to；far from；free from；wear out；get arrested

　　1．Zhejiang tea and silk.

　　2．His argument me.

3．Three people were the wreckage (废墟)．