搜索
In the physical world, bullying (欺凌弱小) is a problem. In some schools the same thing happens too. Both parents and teachers are very worried and try many ways to solve it.
But now it’s happening on the Internet too. People call it cyber-bullying. A 13-year-old girl from Chicago has her own idea to stop it.
The young scientist Trisha Prabhu, 13, from Chicago, is working on a project named Rethink. It tells people to rethink before bullying.
Trisha Prabhu’s study shows that over 50 percent of teens have experienced cyber-bullying. And 93 per-cent of teens won’t post (发布) hurtful things if someone tells them to rethink. Sometimes they just don’t know what they are doing.
And there is a reason. The prefrontal cortex (脑前额皮质) of the human brain isn’t developed fully until the age of 25. It controls decision-making.
From her research, Prabhu believes her Rethink tool can help. It finds out hurtful messages and reminds users to think again.
1．According to the first paragraph, who may be someone bullied by others?| A．Li Ming, who is heavy. | B．Jim, who is strong. |
| C．Linda, who is short. | D．Lucy, who is tall. |
| A．网上交友 | B．网络诈骗 | C．网上捐款 | D．网络欺凌 |
| A．They want to bully someone. |
| B．They don’t know what they are doing. |
| C．Others ask him to do so. |
| D．They have fun doing it. |
| A．A 15-year-old boy. | B．A 26-year-old girl. |
| C．A 40-year-old man. | D．A 70-year-old woman. |
同类型试题
y = sin x， x∈R， y∈[–1，1]，周期为2π，函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x， x∈[–1，1]， y∈[–π/2，π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
y = sin x， x∈R， y∈[–1，1]，周期为2π，函数图像以 x = (π/2) + kπ 为对称轴
y = arcsin x， x∈[–1，1]， y∈[–π/2，π/2]
sin x = 0 ←→ arcsin x = 0
sin x = 1/2 ←→ arcsin x = π/6
sin x = √2/2 ←→ arcsin x = π/4
sin x = 1 ←→ arcsin x = π/2
