七选五的英语是 Five out of seven
七 seven；
五 five
（图片来自网络侵删）
五岁儿童牙齿不健康的比例高。
A high proportion of five-year-olds have teeth in poor condition.
他今年第五次举起了获胜奖杯。
He lifted the cup for the fifth time this year.
所有七、八年级的学生均可观看此剧。
The play is open to all seventh and eighth graders.
洗洗牌，然后给每人发七张。
Shuffle the cards and deal out seven to each player.
