?
A
When I was in high school our physics teacher gave us a challenge ______(1) involved making a paper airplane of any shape. The only objective was to get it to fly as far as possible. ______(2) (stand) at the starting line, one of my classmates took a piece of flat paper, crumpled (把…捏成一团) it up, and ______(3) (throw) it down the way. He beat the class with ease. Some of the students got mad and said that he cheated, but the physics teacher ______(4)(clear) explained it could be any shape and that a paper ball was indeed a shape.
B
Buildings around the world ______(5)(go) dark for 60 minutes this evening in a voluntary event known as Earth Hour. This grassroots effort started in 2007 in Sydney, Australia, and has since grown into ______(6) global movement to raise awareness of our energy consumption and the effects of climate change on our planet. Anyone can participate in this movement ______(7) switching off the lights at 8:30 PM local time. Last year close to 18,000 landmark buildings switched off their lights in 188 countries. Will you dim your lights tonight?
C
The story of Chinese fashion began in 2011 when Feiyue and Huili, both Chinese sneaker brands, suddenly gained international attention. Their products ______(8)(see) on models all over the world then. Last year, Chinese sportswear brand LI-NING was at the New York Fashion Week in September with new designs ______(9)(decorate) with Chinese characters. Now the Chinese brands are impressive and ambitious and can go head to head with foreign brands. And this ambition may be due to the fact that China’s young people are now more confident about ______(10) (they) own culture. （2019年北京西城二模）
参考答案：
1．that/which
2．Standing
3．threw
4．clearly
5．will go/are going
6．a
7．by
8．were seen
9．decorated
10．their