网址：http://m.1010jiajiao.com/timu3_id_2641379[举报]
完型填空
There is nothing m 1 important than the sun. Without the sun all the l 2 things on the earth will die. The sun is a star. In the sky. there a 3 many stars like the sun. They are as l 4 as the sun and as hot as the sun. A 5 night, you can see many stars, but i 6 the daytime, you can see only one star－the sun.
The sun is much n 7 to us than any other stars. That's why it looks the biggest and brightest of all the stars. The distance(距离) of the sun f 8 the earth is as much as 150 million kilometres. Most of the stars are thousands of light years a 9 from the earth.
Do you know what is the light year? Nothing in the world travels f 10 than light. It travels 300,000 kilometres a second(秒). And one light year is the distance that light travels in one year.
查看习题详情和答案>>
（1）在图上画出滑轮组最省力的绕线方式。
（2）安装好实验器材后，记下钩码和拴住弹簧测力计的线端原先的位置，
（3）某同学正确测得钩码上升的高度为0.2m，钩码重1.5N，其他被
测和计算的数据如下表：
| 拉力F/N | 拉弹簧测力计的线端通过距离S/m | 有用功W有用/J | 总功W总/J |
| 0.6 | 0.4 | 0.3 | 0.24 |
（4）若用上述装置提起重1.5N的钩码，机械效率为?1；提起重3N的钩码，机械效率为?2，则?1 ?2（填“>”、“<”或“=”） 查看习题详情和答案>>
The sun is a star. There are millions of stars like the sun i (1) the sky. They are as large as the sun and
as hot as the sun. At n (2) you can see many stars, but in the daytime you can o (3) see one
star-the sun. The sun is much n (4) to us than any other star. That's w (5) it looks the biggest
and brightest of all the stars. The distance (距离) of the sun from the earth is as much as 110 million kilometers.
Most of the stars are thousands of light years a (6) from the earth. Do you k (7) the light year?
Nothing in the world travels faster than light. It t (8) 300, 000 kilometers a second (秒). And one light
year is the distance that light travels in one year.
根据短文内容和首字母提示把所缺单词填写在短文中相应的横线上，使句意完整正确。
There is nothing more important to life than the sun．Without the sun all living things on the earth would die．
The sun is a star．There are millions of stars like the sun i________(1)the sky．They are as large as the sun and as hot as the sun．At n________(2)you can see many stars, but in the daytime you can o________(3)see one star－the sun．
The sun is much n________(4)to us than any other star．That's w________(5)it looks the biggest and brightest of all the stars．The distance(距离)of the sun from the earth is as much as 110 million kilometers．Most of the stars are thousands of light years a________(6)from the earth．Do you k________(7)the light year?Nothing in the world travels faster than light．It t________(8)300 000 kilometers a second(秒)．And one light year is the distance that light travels in one year．