【单选题】生物柴油是以植物油和动物油脂等为原材料制成的燃料。研究表明生物柴油燃烧后SO2和颗粒物质的排放量很少,特别是CO等有害气体的排放量比化石燃料低11%~53%。使用生物柴油的优点是( ) 1减少空气污染 2缓解温室效应 3不可再生 4减少酸雨危害
【单选题】Jack wanted to read more, so he asked his friend if there was ________ to read.
【单选题】生物柴油是以植物油和动物油脂等为原材料制成的燃料。研究表明生物柴油燃烧后SO 2 和颗粒物质排放很少,特别是CO等有毒气体的排放量比化石燃料低11%~53%。使用生物柴油的优点是() ①减少空气污染 ②缓解温室效应 ③不可再生 ④减少酸雨危害
【单选题】Jack wanted to read more, so he asked his friends if there was ________ to read. [ ]
【单选题】客家童谣的表现艺术很多,其中用得较多的是 。
【单选题】Jack only wanted to ______.
C.
put something in place
D.
keep something in place
【单选题】生物柴油是以植物油和动物油脂等为原材料制成的燃料。研究表明生物柴油燃烧后SO 2 和颗粒物质排放很少,特别是CO等有害气体的排放量比化石燃料低11%~53%。使用生物柴油的优点是 ①减少空气污染 ②缓解温室效应 ③不可再生 ④减少酸雨危害 [ ]
【单选题】Why did Jack go to the umbrella shop?
A.
He wanted to buy a new umbrella.
B.
He asked the workers in the shop to mend the umbrellas.
C.
He wanted to return the umbrella to the woman.
【单选题】Jack told his daughter that she could have she wanted for Christmas.
【简答题】使用SQL语句查找“成绩”表中有“分数”的记录:SELECT﹡FROM成绩WHERE分数__________