题目

控制变量法是实验探究的重要方法。利用下图所示实验不能实现的探究目的是 （       ） A．甲中①②对比可探究铁的锈蚀与植物油是否有关 B．甲中①③对比可探究铁的锈蚀与水是否有关 C．乙可探究可燃物的燃烧是否需要达到一定温度 D．乙可探究可燃物的燃烧是否需要与氧气接触 答案：ASOCCERTOURNAMENTFinal Match Sunday-----3 p.m.-----Will the local team make it all the way to the end?Find out more by calling---555-3033---MOTHER' SDAYBIG SALEFriday 6-9 p.m.EVERYTHING 50% OFFSave your money & time.Fall in love with prices you can afford.Visit us at New Star Mall.Monday to SaturdayBIG HITS CINEMAMovies every night at 7Actor of the week:Wentworth Miller=====================Harry Potter children's showSaturday at 2 p.m.Tel:690-1856Global Earth HourJoin us!Turn off your lights for ONE hour8:30 p.m. local time, Saturday 28 Mar.2013=====================Take action to fight global warmingMore than 2,000 cities around the world expected to participate in rolling event.【1】If you want to join the world for Earth Hour you can simply ________.A.call us on 555-3033 at 3 p.m. SundayB.go around the world to 2,000 citiesC.take actions at 8:30 a.m. on 28 Mar. 2013D.switch off your lights for one hour【2】The final soccer match is ________.A.at 7 p.m. on FridayB.at 3 p.m. on SundayC.at 3 p.m. on SaturdayD.at 2 p.m. on Monday【3】There is a silk blouse which is 100 at New Star Mall. You can pay ________ if you want to buy it on Mother’s Day.A. 40B. 60C. 50D. 25