题目内容：

    US teenagers Hannah Lucas, 15, and her brother Charlie, 13, have created an app called notOK. It came out in the US and Canada on Jan 31. People just need to pay $1.99 (12.5 yuan) each month to use it.

Imagine having an app that works like this: When you need help, just open the app, touch the “notOK” button and a text message will be sent to up to five pre-selected (预先选定的) people, along with a link to the user’s GPS location（位置）. The message reads: “Hey, I’m not OK. Please call me, text me, or come find me”.

Hannah was inspired (启发) to create the app during a dark time in her life last year. She suffered from a disease that caused her to pass out（晕倒）at school. Other kids sometimes bullied （欺负）her about this. She felt sad and wanted to find an app that would allow her to get help when she wasn’t feeling OK.

She asked her brother Charlie, whose nickname is “Tech Support”, to find such an app. When they couldn’t find one, they decided to create one themselves.

They came up with some designs for the app first. Charlie took a programming class last summer and built a website for the app. Hannah also shared her idea in her summer business class. Some app developers showed interest and decided to help her.

Hannah is happy that her app is helping others. “It makes everything I went through（经历）last year worth it,” she said.

1.Which of the following is NOT true about the app notOK?

A.Hannah Lucas and her brother developed this app.

B.Users can use the app to call for help.

C.It can only send a message to a certain person.

D.Users can send their location to others through this app.

2.Why does Hannah Lucas pass out sometimes?

A.She has a disease that causes this to happen. B.She is often bullied at school.

C.She doesn’t get enough sleep. D.She gets too nervous about exams.

3.What did Hannah and her brother create this app for?

A.To make money to support their families.

B.To help people find new friends online.

C.To call on people to focus on（关注）school bullying.

D.To help people when they are not feeling well.

4.What can we learn from the last two paragraphs?

A.Hannah got her idea in her summer business class.

B.Hannah is happy that others find this app helpful.

C.Charlie and Hannah sold this app to an app developer.

D.Charlie had been learning programming for many years.