【正文】 ts are full of ________ which leads to great changes in our life.A．instruction B．instrument C．invention D．introduction14．As a student, getting up early and being afraid of missing the first school bell may be mon ________ for you. But thanks to new rules, you can stay in bed longer than before.A．signs B．symbols C．experiences D．expressions15．Would you send me some ________ of yours? I miss you very much!A．magazines B．photos C．phones D．works16．Yuan Longping is considered to have made a great _________ to the development of agriculture.A．progress B．invention C．introduction D．contribution17．—The sweater is not the right ________ for me.—Well, shall I get you a bigger one or a smaller one?A．price B．color C．size D．material(材料)18．–Could you give me a few ______ on how to spend the ing summer holiday?OK. Let me see.A．hobbies B．knowledge C．suggestions D．information19．The visitor told a very ______story about what he did for a ______in Africa.A．lively；living B．lively；life C．living；living D．alive； live20．—Do you know the boy saving his neighbour from a fire last week?—Sure! I really admire him for his ________.A．gift B．friendship C．courage D．ability21．The number of the people who use Huawei ________ is getting larger and larger.A．products B．customers C．cultures D．histories22．Kids under the age of ten can’t make good_______. They are not sure which is better for them.A．choices B．progress C．efforts D．mistakes23．— Do you really think you can learn that much in only a couple of hours?— Yes. We will try a very useful ________ of dealing with memory problems.A．report B．process C．method D．activity24．This is a ________ of our city. Look! Our school is here.A．map B．music C．name D．team25．One person’s ________ doesn’t depend on how much money he has made, but on how many contributions he has made to our country.A．experience B．value C．wealth D．career26．Life is like riding a bicycle. To keep your ________, you must keep moving.A．promise B．position C．balance D．ability27．With the development of the service industry, the working ________ is increasing and more jobs should be offered.A．invention B．pronunciation C．introduction D．population28．— Could you tell me more about Chinese ________, Mr. Li?— Sure. For example, we usually eat rice dumplings on the Dragon Boat Festival.A．customs B．services C．symbols D．holidays29．—Do you know why David went to London last month?—He went there with the ________ of finding a better job as an engineer.A．experience B．condition C．knowledge D．purpose30．All the ________ was for nothing because the visit was cancelled. Put it away now.A．pollution B．connection C．suggestion D．preparation31．Cin