Most teenagers are still trying to find their passion and purpose in life.However，not Gitanjali Rao.The 15-year-old sophomore at STEM School Highlands Ranch has been coming up with innovative solutions to worldwide problems since she was ten.It is，therefore，not surprising that the youngster was selected from 5，000 equally impressive nominees-aged 8 to 16-for TIME Magazine's first-ever "Kid of the Year."
The young girl，who knew she wanted to bring change and positivity to her community since 3rd grade，was just ten years old when she heard about the lead-tainted （含铅的） water in Flint，Michigan，in 2015.After spending two months researching how the area's drinking water became polluted，Rao began designing a device called Tethys，which attaches to a cellphone and informs the resident via an APP if their drinking water contains traces of the harmful metal.The prototype （模型） earned her the Young Scientist Challenge Award in 2017.A start-up entrepreneur is working with scientists and medical professionals to test Tethys' potential and hopes the device will be ready for commercial use by 2022.
In 2019，Rao took on another social issue-opioid addiction.The app she designed won the Pillar Prize at the Innovation Student Challenge，which helps to catch drug addiction in young adults before it's too late.Rao said. "I wanted to come up with a way to diagnose such addiction at an early stage so you can take action earlier."
More recently，the teenager has created another inspiring app. "I stared to hard-code （编写硬编码） in some words that could be considered bullying，and then the computer search engine took those words and identified words that are similar.You type in a word or phrase，and it's able to pick it up if it's bullying，and it gives you the option to edit it or send it the way it is." Rao told editor Angelina in an interview. "The goal is not to punish.Instead，it gives you the chance to rethink what you're saying so that you know what to do next time around."
（1）How is Gitanjali Rao different from most teenagers？ CC
A．She is trying to find her passion and purpose in life.
B．She is a sophomore at STEM School Highlands Ranch.
C．She has put forward creative answers to worldwide problems.
D．She applied to be "Kid of the Year" of TIME Magazine.
（2）What can we learn about Tethys from Paragraph 2？ CC
A．It is a device for residents to research the drinking water.
B．The traces of the harmful metal will be presented on it.
C．Its phone APP tells users whether the water is polluted.
D．A start-up entrepreneur has put Tethys on the market.
（3）What does the underlined expression " opioid addiction" in Paragraph 3 refer to？ BB
A．Internet addiction.
B．Drug abuse.
C．App innovation.
D．Health diagnosis.
（4）What is the goal of the app against cyberbullying？ BB
A．To give a punishment for bullying.
B．To guide users to send proper words.
C．To withdraw bullying messages.
D．To help find more accurate expressions.
【答案】C；C；B；B
【解答】
【点评】
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发布：2024/4/20 14:35:0组卷：0引用：1难度：0.6
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A．Increasing STEM dropout rate.
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