3．Community police have made a very positivecontribution（contribute） to crime prevention．

分析 社區(qū)警察為預(yù)防犯罪做出了積極貢獻(xiàn)．

解答 答案是contribution．
本題考查動詞的適當(dāng)形式；contribute vt．貢獻(xiàn)，投稿；contribution n．貢獻(xiàn)，投稿；make a contribution to對…做貢獻(xiàn)；促進(jìn)； 故答案是contribution．

點評 本題是要求用所給動詞的適當(dāng)形式填空，解題時首先考慮句中需要的是謂語動詞還是非謂語動詞；其次，如果是謂語動詞關(guān)注時態(tài)、語態(tài)和數(shù)的變化；如果是非謂語動詞要聯(lián)系非謂語的基本用法判斷非謂語的形式．

練習(xí)冊系列答案
相關(guān)習(xí)題

科目：高中英語 來源： 題型：選擇題

18．All the guests at the party were dancing and singing happily____suddenly the lights went down．（　�。�
A．untilB．whileC．whenD．before

查看答案和解析>>

科目：高中英語 來源： 題型：閱讀理解

14．It was once thought that air pollution affected only the area immediately around large cities with factories and/or heavy automobile traffic．Today，we know that although  these are the areas with the worst air pollution，the problem is actually worldwide．On several occasions over the past decade，a heavy cloud of air pollution has covered the entire eastern half of the United States and led to health warnings even in rural areas away from any major concentration of manufacturing and automobile traffic．In fact，the very climate of the entire earth may be affected by air pollution．Some scientists feel that the increasing concentration of carbon dioxide in the air resulting from the burning of fossil fuels （coal and oil） is creating a"greenhouse effect"-----holding in heat reflected from the earth and raising the world's average temperature．If this view is correct and the world's temperature is raised only a few degrees，much of the polar ice cap will melt and cities such as New York，Boston，Miami，and New Orleans will be under water． 
     Another view，less widely held，is that increasing particulate （廢氣排往空中而形成的微粒、顆粒）matter in the atmosphere is blocking sunlight and lowering the earth's temperature─a result that would be equally disastrous．A drop of just a few degrees could create something close to new ice age and would make agriculture difficult or impossible in many of our top farming areas．At present we do not know for sure that either of these conditions will happen （though one recent government report prepared by experts in the field concluded that the greenhouse effect is very likely）．Perhaps，if we are very lucky，the two tendencies willoffset each other and the world's temperature will stay about the same as it is now． 
32．As pointed out at the beginning of the passage，people used to think that air pollutionD．
A．caused widespread damage in the countryside
B．a(chǎn)ffected the entire eastern half of the United States
C．had damaging effects on health
D．existed merely in urban and industrial areas
33．The underlined word"offset"in Para．2 could best be replaced byB． 
A．slip into
B．make up for 
C．set up
D．catch up with
34．It can be inferred from the passage thatA． 
A．lowering the world's temperature merely a few degrees would lead many major farming areas to disaster
B．raising the world's temperature only a few degrees would not do much harm to life on earth
C．a(chǎn)lmost no temperature variations have occurred over the past decade
D．the world's temperature will remain constant in the years to come
35．This passage is mainly concerned withC． 
A．the greenhouse effect 
B．the burning of fossil fuels
C．the potential effect of air pollution 
D．the likelihood （可能性） of a new ice age．

查看答案和解析>>

科目：高中英語 來源： 題型：填空題

11．My neighbor used to give me a hand in time of trouble，which was very kind of them．

查看答案和解析>>

科目：高中英語 來源： 題型：填空題

18．In students'eyes，a good teacher should have many goodvirtues．（virtue）

查看答案和解析>>

科目：高中英語 來源： 題型：短文改錯

8．Chinese students celebrates their birthdays in different ways．And the most common way was to hold a birthday party，on which friends get together to have fun drinking，singing and dancing．On the birthday，one usually accepts nice gifts and good wishes from friends and parents．Sometimes parents will prepare a special dinner or a cake to show their love for their children．However，most children are looking forward to spending their own birthdays and enjoy themselves．Though birthday celebration is one of the important activity in one's life，it can be done in some more meaningful ways．For example，we can buy some flower or cook a delicious meal for our parents．Only in this way we express thanks to our parents in return for their love and care．

查看答案和解析>>

科目：高中英語 來源： 題型：選擇題

15．There's no doubt _____ the novel will be popular once printed．（　�。�
A．thatB．whetherC．whatD．which

查看答案和解析>>

科目：高中英語 來源： 題型：填空題

12．回顧那段日子時，我意識到自己犯了個大錯誤．
When Ilookedbackonthose days，I realized I had made a big mistake．

查看答案和解析>>

科目：高中英語 來源： 題型：聽力題

13．What's the weather going to be like tomorrow？
A．Cloudy．
B．Rainy．
C．Sunny．

查看答案和解析>>

同步練習(xí)冊答案