把边长2.5dm的正方形纸，卷成一个最大的圆筒，此圆筒的侧面积是__爱下问搜题

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问题填空题

把边长2.5dm的正方形纸，卷成一个最大的圆筒，此圆筒的侧面积是______．

答案

根据分析知：把边长2.5dm的正方形纸，卷成一个最大的圆筒，这个圆柱筒的对面周长和高都是2.5分米，所以侧面积是：2.5×2.5=6.25（平方分米），

答：此圆柱筒的侧面积是6.25平方分米．

故答案为：6.25平方分米．

多项选择题

含氢氯噻嗪的中成药是（）

A.脉君安片

B.珍菊降压片

C.溃疡宁片

D.降糖灵胶囊

E.脉络通颗粒

填空题

选择方框内所给词组，用其正确形式完成句子。

in the southern part of, have a look at, on one's way back, be surprised at,
in many ways, full of, keep doing, get used to, win a photo competition, a symbol of

1. What's the largest English-speaking country _______ the world?
2. _______ home after school, Linda met her best friend, James.
3. In order to _______, Johnson quitted(辞掉)his job to visit many places and take pictures.
4. It is getting harder and harder to _______ the hot weather in Beijing.
5. I _______ how big the Ayers Rock was, while we were taking a helicopter tour over the rock.
6. Chimpanzees(黑猩猩)and common monkeys are different from each other _______, such as their
brains, ways of acting and so on.
7. His dormitory is always in a mess, _______ empty cans and dirty socks.
8. The Potala Palace is _______ the wisdom and power(智慧和力量)of the Tibetan people.
9. Many coal labours _______ work more than 18 hours a day by their bosses in 1930s in China. That
was definitely illegal(非法的).
10. If you _______ the wonderful view over the sea from this window, I am sure you will buy this house
without hesitation(犹豫).