名词解释

光化学烟雾 名词解释

【参考答案】

NO和烯烃类碳氢化合物，在紫外线的作用下，发生各种光化学反应，形成O3、NO2
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完形填空。 A man wanted to make an investment (投资)．An idea struck him:'Why don't I plant a small mangotree and enjoy the benefits when it grows into a big one?' So he went to the __1__,bought a small tree and took it homE.To the pride of his family,he __2__ it in the center of his __3__. He read everything about __4__ a mango treE.He got up early every morning,for he was determinedto supply the tree with all the necessary nutrients. He watered it,__5__ it with manure (粪肥),and took good care of its leaves by removing those __6__ ones. He made sure the tree received enough carE. Many times he sat and __7__ the beauty of the growing tree while dreaming about the __8__ mangoes that the tree would __9__. His mind was always filled with the wish to taste the first fruit of the treE.Years went by __10__…now,he had a big tree with its leaves shining and healthy,its bark healthy and harD.It was a big attraction __11__ it decorated his whole garden. Then one day he noticed a small bud (花蕾),which in a couple of days grew into a beautiful __12__. Now he could __13__ wait for the fruit so he started to increase his supply of nutrients and carE.Then one day the tree let out its first product-a small green fruit. The man was so __14__. He waited for a few more weeks till the fruit grew in __15__. The day came when he decided to __16__ the first fruit of the treE.He __17__ the tree,picked the fruit and then came his __18__. The fruit was not like what he expecteD.It was hard,big and rounD.He was puzzleD.He was saD. Seeing this,his __19__ came and asked him what happeneD.He told them that the fruit from his tree was not what he wanteD.When the neighbours heard this,they did not know whether to __20__ orcomfort him,for what he planted years ago was not a mango treE.We can only reap (收获) what weplant.( )1.A.city ( )2.A.grew ( )3.A.garden( )4.A.buying( )5.A.decorated ( )6.A.green ( )7.A.admired ( )8.A.beneficial ( )9.A.bear ( )10.A.immediately( )11.A.because ( )12.A.flower ( )13.A.always ( )14.A.greedy ( )15.A.age ( )16.A.observe ( )17.A.climbed ( )18.A.anxiety ( )19.A.children ( )20.A.complain B.farm B.moved B.house B.improvingB.equipped B.redB.drew B.expensiveB.burst B.quickly B.if B.fruit B.hardly B.happy B.length B.sell B.cutB.cheers B.friends B.laugh C.market C.planted C.village C.keeping C.served C.white C.greeted C.healthy C.deserve C.narrowlyC.though C.leaf C.never C.nervous C.size C.steal C.hid C.disappointmentC.neighbours C.motivateD.shopD.threw D.yardD.raising D.supplied D.yellow D.operated D.tasty D.makeD.suddenly D.whenD.nut D.strangely D.sad D.width D.taste D.killed D.opinion D.relatives D.support
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