【正文】 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．water16．For the time being we can collect much ________ either from books or on the Internet.A．idea B．method C．information D．suggestion17．Yancheng Nature Reserve covers an ______ of over 45,000 square kilometers. It is one of the world’s most important wetlands.A．area B．object C．space D．population18．—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．ability D．chance19．–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．information20．Look! The children are having so much ________ playing hide and seek in the flower sea.A．joke B．fun C．knowledge D．skill21．—Yuan Longping and his team have succeeded in planting saltwater rice.—I’ve heard about it. He has made a huge ________ to our country’s agriculture.A．invention B．petition C．contribution D．production22．—Why are you so crazy about travelling, Wu Dong?—Travelling can offer us real________of languages, customs and cultures.A．attraction B．background C．difference D．experience23．A factory will be built for the __________ of this type of new energy car.A．position B．population C．production D．pronunciation24．—I have great ________ in learning Chemistry and I am so worried. Could you help me?—Sure. I would be glad to.A．interest B．trouble C．fun D．joy25．— Can you describe what Mr. Green’s daughter is like?— Oh, she has the very ______ of Mr. Green. I’m sure you can know her at the first sight.A．photo B．voice C．look D．taste26．My sister has no sense of ________. She always gets lost in the city streets.A．shame B．duty C．direction D．humour27．—Do you know a Chinese called ChenGao?—Exactly, his ________ makes the whole world shocked and he bees the youngest PHD supervisor（博導）in Math area.A．advantage B．progress C．achievement D．attention28．— Do you stay up at night and get up late in the morning just like me?— Never. I think you’d better break that_________.A．habit B．project C．ability D．advice29．So let me say here that in front of the Chinese side, the United States does not have the qualification (資格) to say that it wants to speak to China from a ________ of strength.A．situation B．position C．condition D．location30．If you’re good at English, you will have one more ________ when searching for jobs.A．method B．advantage C．interest D．interview31．—Searching for information is not a big deal today.—Exactly, the ________ is how we can tell whe