C
A special APP named “Are You Alive” has become popular recently. It reached the top of the download list within six hours after it released. This APP is designed for people who live alone. If a user does not check in for two days in a row, the APP will send an email to his or her contacts at once.
The APP’s success comes from its understanding of market needs. There are about 125 million people living alone in China. These people are willing to pay for a sense of safety. With only 8 yuan annual fee, the APP has quickly attracted thousands of users. The team behind it is very small, and they removed all complex functions to focus on this one need.
However, some people still have questions: Can 8 yuan really provide real protection? Are there any legal risks? The popularity of the APP tells us that business chances often lie in meeting people’s unnoticed needs, not in crowded popular fields.
The team is now planning to add a short message service to make the APP more helpful. They also have no plan to change its unusual name, because they believe the name is a key reason for the APP’s success.
()1. What will the APP do if a user does not check in for two days?
A. Call the user immediately.
B. Send an email to the user’s contacts.
C. Stop working completely.
D. Send a warning to the police.
()2. What does the word “safety” in Paragraph 2 refer to?
A. Keeping users healthy.
B. Making users feel protected.
C. Helping users save money.
D. Letting users make friends.
()3. Why is the APP successful according to the passage?
A. It has many different functions.
B. It understands what some people really need.
C. It is very expensive and looks professional.
D. It was advertised on TV and the Internet.
()4. What can we learn from the APP’s story?
A. Good business ideas often come from small needs.
B. Only expensive products can be successful.
C. APPs with strange names never succeed.
D. Living alone is becoming less common.
D

1.B 2.B 3.B 4.A

1. 细节理解题：定位原文第一段最后一句"If a user does not check in for two days in a row, the APP will send an email to his or her contacts at once."，可以直接得出如果用户连续两天不签到，APP会给用户的联系人发送邮件，对应选项B。
2. 词义猜测题：结合上下文，这款APP面向独居人群，后文第三段也提到"provide real protection"，说明这里的"safety"指的是让独居用户获得被保护的感受，对应选项B。
3. 细节理解题：原文第二段第一句明确说明"The APP's success comes from its understanding of market needs."，也就是这款APP的成功源于它了解部分人群的真实需求，对应选项B。
4. 主旨理解题：根据第三段"The popularity of the APP tells us that business chances often lie in meeting people's unnoticed needs, not in crowded popular fields."，可以得出好的商业创意往往来自未被关注的小需求，对应选项A。