根据句意及首字母或汉语提示完成单词
① Lots of sports c____ are strict with the athletes.
②He is the winner at the 100-metre r____.
③ Zhang Yining is not an o____ success.
④ The ____ (广告)is very meaningful.
⑤Tom broke a ____ (纪录)in running.
过圆上一点可以作圆的最长弦有( )条.
活细胞内合成酶的原料是( )
如图表示在20℃时某植物光合作用强度与光照强度的关系。对于曲线的下列各项叙述正确的是( )