猜你喜欢
- 1氧化铝和氢氧化钠反应生成四羟基合铝酸钠
- 2在下列括号内填上细胞能量转换器的名称:太阳能 ( ) 有机物的化学能 ( ) 植物生活所需的能量
- 3如何分离木炭粉和氧化铜
- 4Dear Bill ,Thank you 21 all of your kindness.I really 22 at your house for a month.Would you li
- 5工程队修一条水渠用了3天,第一天修了全长的25%,第一天比第三天少修21天,第二、三天的比是7:8,这条水渠长多少米?
- 6如图,已知圆内接四边形ABCD的边长为AB=2,BC=6,CD=DA=4,则四边形ABCD面积为( ) A.163 B.8 C.323 D.83
- 7形容时间短的词语(三个字的)
- 8Billions of people learn about news stories of their own country and________the world every day ,either by watching TV o
- 9在图中,梯形的下底是17.5厘米,高是5厘米,两个底角都是45°,求梯形的面积.
- 10He doesn't think he will come tomorrow,反义疑问句