问题
填空题
小雪掷一枚硬币50次，有20次正面朝上，则正面朝上的频率是（ ）%．
答案
40
搜题请搜索小程序“爱下问搜题”
小雪掷一枚硬币50次，有20次正面朝上，则正面朝上的频率是（ ）%．
40
| 请你阅读短文,并选择适当的单词填空. | |
world．It's more 1. ________________ for people to find a job．And it's also more difficult for people to ride in the streets．Most people live 2. ________________ because they eat healthier food. Noboy eats meat very often 3. ________________ more and more people know it's important to have a healthy diet. They eat more 4. ________________ and fruit. They don't have to work long hours. They can surf the Internet at home. They also have more free time for sports and 5. ________________ for a trip. |