1、预习导航一、 将下列单词与其相对应的释义搭配起来AB 1occasionally aincluding many different parts，types，etc.2multiple bnow and then or here and there3current cof the present time；happening now4extension deffective or convenient in actual use；suited to actual conditions5practical ethe act of extending or being extended答案：1.b
2、2.a3.c4.e5.d 二、把下列短语译成汉语1ring off _2out of order _3get through _4hang on _5call/ring up _6now and then _7in case _8traffic jam _9dive into _10set about doing sth/set out to do sth_答案：1.挂断电话2.次序颠倒3.设法联系上；做完；通过4不挂断；紧紧抓住5.给打电话6.偶尔；有时7.以防；万一8.交通堵塞9.潜入；一心投入10.开始做某事三、阅读ALEXANDER GRAHAM BELL，回答下列问题1The tex
3、t mainly tells us some information about _.ABell and his telephoneBBell and his telegraphCBell and his helicopter designsDBell and his inventions2Bell invented the _by chance according to the text.AMorse codeBtelegraphCtelephone Dtetrahedron3Which statement is TRUE according to the text?ABell made a
4、 contribution to the deaf education.BBell invented the telephone for the deaf.CBell thought that you should not think too much about something that you had never seen before.DBell invented a lot of flying machines while searching for a kite to carry a man into the air.4According to the text，Bell got such great achievements thanks to_.Aa straw joined to a deaf mans earBthe exploring around problemsCa moving electrical currentDhis excellent assistant Watson答案：1.D2.C3.A4.B
