Ⅱ.语法填空[2015•山东威海一中高三二模]阅读下面材料，在空白处填人适当的内容（1个单词）或括号内单词的正确形式。Thewaywecookisimportant.Inmanycountriesthetwochoicesare9.___________(nat
Ⅱ.语法填空[2015•山东威海一中高三二模]
阅读下面材料，在空白处填人适当的内容（1个单词）或括号内单词的正确形式。
Thewaywecookisimportant.Inmanycountriesthetwochoicesare9.___________(nature)gasor electric-poweredstoves.
TheWorldHealthOrganizationwarnsthatmillionsof people10.__________(suffer)fromindoorairpollutionatthe presenttimewhichresultsfromtheuseof11._______(danger)fuelsandcook-stovesinthehome.
WHOofficials saynearly three billionpeopleare 12._____(able)tousecleanfuelsandtechnologiesfor cookingheatingandlighting.Asaresultmorethanseven millionpeoplediefromexposuretoindoororoutdoorairpollutioneachyear. Mostofthedeathsarein13.________________
(develop)countriessuchasIndiaChinaandLatinAmeri?cancountries.
WHO officialssayopeningawindowordoor 14.__________(let)outtheharmfulairwillnotcorrectthe situation.15.__________ willonlypollutetheoutdoors.
NigelBruce 16.____isaprofessorofPublic HealthattheUniversityofLiverpoolsaysresearchersaredevelopinggoodcook-stovesandotherequipmenttoburnfuels17.____amoreefficientway.
Butthisisjustastart.Itisurgingdevelopingcountries touse18._____(clean)fuelsandincreaseaccesstocleanerandmoremoderncookingandheatingappliances(电器）.