It is the year 2025 now. Gao Wei works at a bank in Hohhot, in Inner Mongolia. He often spends his weekends and holidays picking up trash in the mountains.

Ten years ago, while hiking (徒步) in the mountains, Gao Wei saw lots of plastic bottles in the bushes. They made the beautiful scenery look messy (脏乱的), so he decided to clean them up. From that day on, every time he goes out, he brings a big bag with him. He picks up litter in forests, on grasslands, and along rivers.

1.1.Where does Gao Wei work?

A In a bank.

B In a school.

C In a hospital.

D In a shop.

解析：选A。A 细节理解题。根据第一段第二句“Gao Wei works at a bank in Hohhot, in Inner Mongolia. ”可知，高伟在一个银行里工作。故选A。

2.2.When did Gao Wei start picking up trash?

A In 2010.

B In 2015.

C In 2020.

D In 2025.

解析：选B。B 数字计算题。根据第一段第一句 “It is the year 2025 now.”和第二段的“Ten years ago...From that day on”可知，现在是 2025 年，高伟10 年前开始捡垃圾。用 2025 减去 10，可算出他从 2015 年开始捡垃圾。故选B。

3.3.What does Gao Wei take when he goes out?

A A small box.

B A plastic bottle.

C A book.

D A big bag.

解析：选D。D 细节理解题。根据第二段的“every time he goes out, he brings a big bag with him” 可知，高伟出门时会随身带一个大袋子。故选D。

4.4.How did Gao Wei use the money from selling recycled trash?

A Bought food.

B Bought a bag.

C Helped others.

D Bought books.

解析：选C。C 细节理解题。根据第三段的“used the money to help people in need”可知，高伟把卖垃圾的钱用来帮助别人了。故选C。