【正文】 tion C．introduction D．munication12．—Do you think Mary has made a wrong ________?—No, I don’t think so. It’s good for her to live alone.A．experience B．experiment C．difference D．decision13．—The air is very fresh in our city. There is less _______ than before.—Yes. The government has taken action to protect the environment.A．wood B．pollution C．noise D．water14．If you are interested in something, it39。s easier for you to pay ________ to it for a long time.A．a(chǎn)ttention B．interest C．progress D．information15．Yancheng Nature Reserve covers an ______ of over 45,000 square kilometers. It is one of the world’s most important wetlands.A．a(chǎn)rea B．object C．space D．population16．—I didn’t have the to go out alone at night when I was a little child.—So did I. But now I’m brave enough.A．courage B．power C．a(chǎn)bility D．chance17．–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．information18．The ____of antibiotics(抗生素) in the 20th century has made a great difference to us.A．invention B．instruction C．method D．discovery19．— Did Lucy dress herself beautifully at her birthday party?— Yeah, of course. Her white dress caught everyone’s ______.A．celebration B．organization C．introduction D．a(chǎn)ttention20．I have a poor ________ of direction, so I am afraid to go out alone.A．scene B．silence C．service D．sense21．All the ________ was for nothing because the visit was cancelled. Put it away now.A．pollution B．connection C．suggestion D．preparation22．Cindy is always full of __________ because she takes a lot of exercise everyday.A．courage B．knowledge C．energy D．experience23．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．mistakes24．A factory will be built for the __________ of this type of new energy car.A．position B．population C．production D．pronunciation25．—I really admire these scientists in different fields in our country.—I agree. They have made a great ________ to our country, even to the world.A．celebration B．conversation C．contribution D．introduction26．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．career27．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．—Why did the artist make no ________ to be understood or liked?