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- 1已知椭圆的一个焦点到相应准线的距离等于椭圆长半轴的长,则这个椭圆的离心率为( )
- 2把24分之9的分子缩小到原来的3分之1,要使分数的大小不变,分母应当减少多少?
- 3Are the rooms large?Where is the Chinese Art Museum?
- 4把盛有碎冰块的大试管插入烧杯里的碎冰块中,如图所示.用酒精灯对烧杯底部慢慢加热,当烧杯中的冰块有大半熔化时,试管中的冰( ) A.熔化一部分 B.全部熔化 C.一点也不熔化 D.无法判断
- 5Would you like some bread?和 Do you want some bread?
- 6翻译句子:昨天七点我们乘飞机到达澳大利亚.
- 7There are about ____ people in the world and ____ people in china
- 8Think of a town you know in china answer the question and write notes什么意
- 9i just hope you are happy not much else farewell中文什么意思
- 10There is a small table near the wi