张学良被誉为伟大的爱国者，中华民族的千古功臣，那是因为他_刷题宝

题干

张学良被誉为伟大的爱国者，中华民族的千古功臣，那是因为他（）

A：发动西安事变

B：发动九一八事变

C：实行不抵抗政策

D：参加重庆谈判

上一题下一题 0.0难度选择题更新时间:2018-11-07 08:37:42

答案(点此获取答案解析）

A

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如图，在平面直角坐标系中，∠AOB=30°，点A坐标为（2，0），过A作AA₁⊥OB，垂足为点A₁；过点A₁作A₁A₂⊥x轴，垂足为点A₂；再过点A₂作A₂A₃⊥OB，垂足为点A₃；则A₂A₃=____；再过点A₃作A₃A₄⊥x轴，垂足为点A₄…；这样一直作下去，则A₂₀₁₇的纵坐标为____．

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长的是（）

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穿过半圆形的两个金属板，板间存在着辐向均匀分布的电场（电场线背离圆心），有一束负离子由a沿半圆弧虚线运

动到b，如右图所示，则这些粒子可能具有:

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如图，AB是半圆O的直径，AC为弦，OD⊥AC于D，过点O作OE∥AC交半圆O于点E，过点E作EF⊥AB于F．若AC=2，则OF的长为（）

同类题5

Hi, my name is Eric. My 1 name is Li Mobai. I am an English boy. I2in China with my parents now. I'm tall and strong. I have short brown hair.

Now, I3 in No. 1 Middle School in Yunyang. I am in Class1, Grade7. I'm the class monitor. I can 4Chinese very well. I5math and music, too. I'm a member of the Music Club. I like 6Chinese songs. Zhang Jie is my favourite star. I like sports very much. At weekends, I often play7 table tennis and basketball with my parents. 8 we go swimming.

I have many good friends at school. I often 9them study English after school. So they think I'm a(n)10 boy. They all like me very much.

Do you like me? Do you want to make friends with me?

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