1. The early explorers found that the stars in the sky were good guiding marks.早期的探险家发现天空的星星是很好的地标。find out “找出，查明”，一般指经过打听询问之后查明事实。 discover “发现，找到”（以前不知道的事情）2. This method worked well at night as log as the weather was good ad the stars could be seen.只要在天气好，能看见星星的晚上，这个办法就很有用。work well 起效work well in doing sth.在某方面起效【基础知识过关】I.短语1.好的地标_ 2.发现_ 3.朝方向_4.有效_ 5.只要_6.在其余的时间里_7.一个人造星体_8.在任何时候_ 9.在森林里迷路_10.逃跑_11.令他惊讶的是_ 【综合能力提升】I. 单项选择( )1.Its said that the thief was caught yesterday, because he_some computers _ the factory. A. steal.from B. steals from C. is stolen from D. stole from( )2._, LinHao was so calm that he saved many childrens lives in Wenchuan Earthquake.A.To be surprised B.To our surprise C.Be surprised at D.Be surprised( )3._ _you study hard, you can make great progress.A.As soon as B.As short as C.As long as D.As far as( )4.Did you go to Jacks birthday party? No, I_.A.are not invented B.wasnt inveted C.havent invited D.didnt invite( )5.The great inventor Edison _ over 1000_ in his life.A.found out; invention B.invented; inventions C.found; invention D.discovered; inventions( )6.All _things cant_without water.A.live; live B.alive ; live C.living; live D.live; living( )7.When did you come here? _ since we landed here.A.It has been two days B.There is two days C.We have two days D.It was two days( )8.When will you go to California? I_ California tomorrow morning.A.leave for B.will be left for C.am leaving D.am leaving for( )9.Everyoone should make a contributionto _ our environment.A.protectB.protected C.protecting D.be protected( )10.Mary was heard_just now. What happened? John was telling a joke.A.to laugh B.laugh C.cry D.to cry II. 句型转换。 1.The science museum was built in the center of the city five years ago.(对划线部分提问)_ _ _ _ the science museum _ ?2.Knives are used for cutting things.（对划线部分提问）_ _ knives used for?3.People used the teapot to serve wine.（同义句）The teapot_ _ _serving wine.4.Did you wear your school clothes yesterday? (同义句)_ your school clothes_ yesterday? 5.They will no longer want to be our servants. （同义句）They_want to be our servants_ _ .6.They have already seen the film.(否定句)They _ seen the film_.7.A rocket is used for sending satellites. (同义句)A rocket is used _ _ satellites,8.My brother spent 120 yuan on the pants. （同义句）My brother spent 120 yuan _ _ the pants.III. 完型填空。 In real life, robots are mainly used in factories. They do many different jobs. Usually these jobs are too 1 , difficult or boring for humans.Robots also help disabled people and people who cannot look after 2 . For example, scientists are making a robot to help _3 people. Now many of them have a dog to help them. The dog is called a guide dog. In the future, guide dogs might be robot dogs.One robot dog is called Meldog. It has wheels. It usually “walks”4 its owner. It is very clever. It 5 the speed of its owners walk. The owner wears a special belt. This belt 6 instructions to the owner from Meldog such as “Stop here”, “Turn left” and “Turn right”.In the United States, another 7 of robot helps disabled workers. This robot, called Kilroy, helps disabled computer operators. The robot 8 the sound of its owners voice. It follows instructions such as “Turn the page” and “Make a cup of coffee”.Robots are also used in American 9 . They can do simple jobs. For example, they shave (刮脸) patients and brush their teeth and take meals from the kitchen to patientsrooms. It never gets lost 10 this robot has a map of the hospital in its computer memory.( )1.A.interesting B.strange C.dangerous D.safe ( )2.A.others B.another C.them D.themselves ( )3.A.deaf B.blind C.old D.sick ( )4.A.in front of B.behind C.under D.above ( )5.A.sees B.guesses C.moves D.knowns ( )6.A.posts B.writes C.reads D.sends ( )7.A.type B.size C. set D.double ( )8.A.guesses B.thinks