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【简答题】如图，已知底角为45°的等腰三角形ABC，底边AB的长为2，当一条垂直于AB的直线L从左至右移动时，直线L把三角形ABC分成两部分，令AD=x， （1）试写出左边部分的面积y与x的函数解析式； （2）在给出的坐标系中画出函数的大致图象．
【简答题】如图，已知等腰三角形ABC中，底边BC=24cm，△ABC的面积等于60cm 2 ． （1）求腰AB的长； （2）若D、E分别是AB、AC的中点，求DE的长．
【简答题】It was raining. I went into a cafe and asked for a coffee. 36 I was waiting for my drink, I realized there were other people in the place, but I sensed 37 . I saw their bodies, but I couldn’t feel the...
【单选题】如图，已知等腰三角形ABC，AB=AC，底边BC的长为2，DE 是它的中位线，则下面三个结论： （1）DE=1； （2）△ADE∽△ABC； （3）△ADE的面积与△ABC的面积之比为1︰4 其中正确的有 [ ]
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0个
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1个
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2个
D.
3个
【简答题】请根据句意从方框中选择合适的动词，并用其适当时态填空，使句子通顺。 feel iron buy plan drink 小题1:—Where is Jack at the moment? —He tomorrow’s trip with Simon in the classroom. 小题2:—What a hot day! Are you thirsty? —No. I ...
【简答题】It was raining. I went into a café and asked for a coffee. 21 I was waiting for my drink, I realized there were other people in the place, but I sensed 22 . I saw their bodies, but I couldn’t fe...
【简答题】如图，已知等腰三角形ABC，D为AC中点，AB=BC=2厘米， DE ， DF 分别是以B、A为圆心的弧．那么阴影部分的面积是多少平方厘米？
【简答题】It was raining. I went into a café and asked for a coffee. ____ I was waiting for my drink, I realized there were other people in the place, but I sensed ____. I saw their bodies, but I couldn’t feel ...
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