说出下面各圆锥的高。（单位：cm）第一个高_1cm；第二个高_2cm；第三个高_3cm。_刷题宝

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说出下面各圆锥的高。（单位：cm）

第一个高____cm；第二个高____cm；第三个高____cm。

上一题下一题 0.0难度选择题更新时间:2018-07-10 10:38:44

答案(点此获取答案解析）

4,10,15

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Dear Mr. Wise,
I'm a slow student. Most of my classmates are much better than me, so I usually get stressed out. Although I spend much time studying for the tests, I can't get good grades. Sometimes my father gives me some help. He tells me not to worry about it, but it doesn't work. What do you think I should do?
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Dear Li Lei,
Many famous people were not so good when they were young. Edison, a famous scientist, did poorly in his studies when he was a young boy. But, as an adult, he made many inventions that helped a lot of people. When I was at young age, I didn't do well at school. I just kept working hard, and at last, I succeed. You should take it easy and try your best. Tomorrow is another day. I believe you can do better.
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