问题
填空题
一个圆柱和一个圆锥的底面半径相等，体积相等，则圆柱和圆锥高的比是______．
答案
底面半径相等，则这个圆柱与圆锥的底面积就相等，
设圆柱和圆锥的底面积相等是S，体积相等是V，所以它们的高的比是：
：V S
=1：3，3V S
答：这个圆柱与圆锥的高的比是1：3．
故答案为：1：3．
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一个圆柱和一个圆锥的底面半径相等，体积相等，则圆柱和圆锥高的比是______．
底面半径相等，则这个圆柱与圆锥的底面积就相等，
设圆柱和圆锥的底面积相等是S，体积相等是V，所以它们的高的比是：
：V S
=1：3，3V S
答：这个圆柱与圆锥的高的比是1：3．
故答案为：1：3．
| 完形填空 | |||
| 1 ! My name 2 Dona. I’m fourteen 3 . I like meeting my friends 4 going to the cinema. My favorite 5 is Brad Pitt. I am Mark. I’m sixteen. I 6 like sport. I 7 French very well and I like physics. I want 8 everything about it. This is Liz. She is thirteen. 9 favorite thing is skating and she can skate very 10 . She likes music. She says it’s exciting. | |||
| ( )1. A. Hi ( )2. A. am ( )3. A. years ( )4. A. but ( )5. A. subject ( )6. A. doesn’t ( )7. A. tell ( )8. A. to learn ( )9. A. She ( )10. A. good | B. Thanks B. is B. year old B. and B. sport B. am not B. talk B. learn B. Her B. nice | C. Sorry C. be C. years old C. or C. day C. don’t C. say C. learns C. She’s C. fine | D. Yes D. are D. old D. so D. actor D. not D. speak D. learning D. Hers D. well |